Sonic News Network

Know something we don't about Sonic? Don't hesitate in signing up today! It's fast, free, and easy, and you will get a wealth of new abilities, and it also hides your IP address from public view. We are in need of content, and everyone has something to contribute!

If you have an account, please log in.


Sonic News Network
Sonic News Network
Main page History and app.Misc.Gallery



Knuckles was born alone and raised on Angel Island[3][4] as the last surviving member of the Knuckles Clan, a long-lost race of echidnas devoted to protecting the Master Emerald from being abused. Apparently, he had been charged with protecting the Master Emerald for as long as he can remember.[8] However, Knuckles' own past was a mystery to him; he knew nothing of how he came to be, his ancestral roots, or even the details of the Master Emerald he was supposed to protect,[8] and believed himself to be the last of his kind entirely. Despite this, he chose to spent his life as the Master Emerald's guardian, never questioning it.[8] Knuckles knew as well from innate knowledge that his duty was his fate, and he was content with that.[9]

For much of his life, Knuckles stayed close to the Master Emerald's shrine, steadfastly protecting it while having little to no contact with the outside world, becoming friends with all the animals and the nature itself on Angel Island.[4]

Sonic the Hedgehog 3 & Knuckles

Sonic the Hedgehog 3

In Sonic the Hedgehog 3, Knuckles was on his usual patrol of the island's pillar, watching over the Master Emerald and the seven Chaos Emeralds, where the Chaos Emeralds started to float and vibrate as tremors began. Then, in an ear-piercing crash and brilliant flash, Knuckles was knocked unconscious. When he came to, Knuckles found the altar partially destroyed and the Chaos Emeralds missing. Shocked, Knuckles investigated the island and discovered the Death Egg had crash-landed on Angel Island, its impact having pushed the island into the sea. This sight made Knuckles recall a prophecy depicted on murals in the Hidden Palace Zone that said that a dragon's egg would bring disaster to the island.[4]

Over the next days, Knuckles patrolled the island while looking for the Chaos Emeralds. Eventually, he met Dr. Robotnik. Robotnik told him he was conducting research on the Death Egg to prevent disaster and that two people, named Sonic and Tails, were coming to steal the Master Emerald. Due to his seclusion, Knuckles believed Robotnik and made it his goal to stop Sonic and Tails and keep them from Robotnik, not realizing that he was being used by Robotnik to keep the duo at bay while he rebuilt the Death Egg.[4][10]

Knuckles launching his ambush on Sonic, from Sonic the Hedgehog 3.

When Sonic arrived on the island as Super Sonic with Tails, Knuckles pulled a cheap shot[10] on Sonic that forced the Chaos Emeralds out of him, which Knuckles escaped with and hid away. As Sonic and Tails traveled across Angel Island, Knuckles attempted to stop the duo in Angel Island Zone, Hydrocity Zone, Carnival Night Zone and Launch Base Zone with his traps. As Sonic tried to board the Death Egg, Knuckles kept Sonic from getting close until tremors caused him to fall.

Sonic & Knuckles

In Sonic & Knuckles, after the Death Egg crash-landed on Angel Island again, Knuckles briefly visited the Hidden Palace Zone through a Giant Ring in Mushroom Hill Zone. After securing the hidden object (unaware that Sonic and Tails were watching), Knuckles disappeared into the forest.

Knuckles trying to save the Master Emerald from Dr. Robotnik, from Sonic the Hedgehog 3 & Knuckles.

As Sonic and Tails continued to explore the island, Knuckles opposed them with traps in Mushroom Hill Zone and Lava Reef Zone. However, as Sonic and Tails arrived in the Hidden Palace Zone, Knuckles faced Sonic in an epic showdown but lost.[10] After his defeat, Knuckles heard an explosion at the Master Emerald's shrine and discovered that Robotnik was stealing the Master Emerald to power the Death Egg. Realizing he had been deceived, Knuckles tried to stop Robotnik but was electrocuted as the doctor escaped. Befriending Sonic and Tails, Knuckles guided them to the Sky Sanctuary Zone from where they could board the Death Egg, though he was too exhausted to accompany them. Fortunately, Sonic and Tails returned with the Master Emerald to Angel Island, and Knuckles watched as his new friends and allies left the island in the Tornado.

Knuckles facing Mecha Sonic, from Sonic & Knuckles.

Unfortunately for Knuckles, the peace came to a halt when one of the Eggrobos, under orders from Robotnik to eliminate Knuckles, attacked him with a bomb as he was relaxing in the Mushroom Hill Zone. Through luck or toughness, Knuckles survived the explosion and set off to defeat EggRobo.[10] Knuckles followed Eggrobo to Sky Sanctuary Zone where it grabbed him with its Egg Mobile and brought it before Mecha Sonic, who had stolen the Master Emerald, threatening to make Angel Island fall once more. However, Knuckles escaped the Egg Mobile before Mecha Sonic could kill him, resulting in EggRobo's destruction. As Knuckles fought Mecha Sonic, the robot used the Master Emerald to go Super. Though Knuckles beat it, the fight caused their arena to crumble. Fortunately, Knuckles and the Master Emerald were rescued by Sonic in the Tornado, and the two returned to Angel Island with the Master Emerald. Having saved Angel Island again, Knuckles and Sonic departed ways once more.

Sonic the Hedgehog Triple Trouble

In Sonic the Hedgehog Triple Trouble, Knuckles was fooled by Dr. Robotnik into thinking that Sonic was out to conquer the world using the Chaos Emeralds.[11] Acting promptly, Knuckles found the five lost Chaos Emeralds first and hid them away in the Special Stages.[12]

Knuckles facing Sonic in Tidal Plant, from Sonic the Hedgehog Triple Trouble.

Knuckles eventually found Sonic and Tails where he warned Sonic spitefully that he would never get the Emeralds, before escaping.[13] Knuckles then attempted several times to oppose Sonic and Tails' quest, but when he faced Sonic and Tails head on using an underwater vehicle, he was defeated. Following his defeat, Knuckles was imprisoned in the Atomic Destroyer Zone by Dr. Robotnik, but he was soon freed by Sonic and Tails. Making up with Sonic and Tails, Knuckles escapes from Robotnik's base alongside the duo.

Sonic the Fighters

In Sonic the Fighters, Knuckles had been entrusted to safeguard one of the Chaos Emeralds to keep Dr. Robotnik from abusing it. Eventually though, Knuckles met Sonic and Tails, who needed the Chaos Emeralds to power the Lunar Fox, a single-seat spaceship Sonic could use to reach and destroy the Death Egg II, a space station Robotnik was currently using to deploy robots to lay waste to the world with. Knuckles, however, argued that since the Lunar Fox only had one seat, then the one to go should be the strongest among them (which he meant himself). Before Knuckles and Sonic could fight over the spot though, Tails got between them and convinced them to fight fair and squarely over the spot in the ring with the other Emerald guardians, and the one who could win against all the contestants got to ride the Lunar Fox. A fighting tournament was subsequently established.[14]

At the end of the tournament, the victor used the Chaos Emeralds to go to the Death Egg II and made it self-destruct moments after escaping it.

Sonic 3D Blast

Knuckles in Green Grove Zone, from Sonic 3D Blast.

In Sonic 3D Blast, Knuckles joined Sonic and Tails on their trip to Flicky Island. Having heard legends that the Flickies on the island held the key to finding the Chaos Emeralds, the group journeyed to there to find these birds. When they got there, however, the island was in pandemonium because of Dr. Robotnik who had built a base on the island from where he turned the Flickies into Badniks and used them to search for the Chaos Emeralds on the island.[15] As such, Knuckles worked together with Sonic and Tails to find the Chaos Emeralds, helping their hedgehog friend save the Flickies and defeat Robotnik.

Sonic Blast

In Sonic Blast, Knuckles teamed up with Sonic to stop Dr. Robotnik when the doctor planned to use the shattered pieces of a Chaos Emerald to fortify his Silver Castle.[16] Knuckles' reasons for doing so was partially because he could not trust Sonic to accomplish this task alone, although he mostly just wanted to punish Dr. Robotnik.[17] In the end, the heroes secured the Emeralds and destroyed Robotnik's fortress.

Sonic R

In Sonic R, Knuckles heard from an advertisement that the World Grand Prix, a racing competition to determine the fastest in the world, was about to take place. Hearing that Sonic was participating, Knuckles entered too, not willing to miss the chance to settle his score with Sonic.[18]

At the World Grand Prix, Knuckles not only went up against Sonic but also his other friends, Tails and Amy, as well as his nemesis Dr. Robotnik and his minions, who planned to use Sonic and co. to locate the Chaos Emeralds on the race track. In the end though, the heroes kept Robotnik from getting the Chaos Emeralds, securing world safety again.

Sonic Adventure

Knuckles meeting Chaos, from Sonic Adventure DX: Director's Cut.

In Sonic Adventure, as Knuckles was falling asleep beside the Master Emerald at its altar while lamenting the story of his life, he awoke to find Chaos next to the shattered Master Emerald. Assuming Chaos broke the relic, Knuckles attacked it, but it blindsided him and escaped. With the Master Emerald gone, Angel Island fell into the sea. Knuckles thus began searching for the Master Emerald's wide-scattered Emerald Shards, but after finding a few, he was pulled into the past Mystic Ruins by Tikal's spirit, when the Knuckles Clan stilled thrived, where he saw Tikal trying to convince Pachacamac to abandon his war efforts.

Back in the present, Knuckles spotted Dr. Eggman and a shining object in the doctor's hands, which he believed to be an Emerald Shard but discovered it was a Chaos Emerald when he corned Eggman. Eggman called in Chaos 1 and transformed it into Chaos 2, but Knuckles still recognized it and beat it. Afterward, before leaving, Eggman told Knuckles that Sonic was after the Emerald Shards as well, which filled Knuckles' mind with doubts. After finding more Emerald Shards, Knuckles found Sonic and Tails. Seeing something shining in Sonic's hands, Knuckles believed it was Emerald Shards, and attacked the duo until Sonic dropped them, and they were revealed to be Chaos Emeralds. Eggman then showed up to nab the Emeralds, mocking Knuckles with how easy it was to trick him into assisting him steal the Emeralds, and gave them to Chaos 2, turning it into Chaos 4. After defeating Chaos 4, Knuckles left to find the remaining Emerald Shards while Sonic and Tails chased Eggman's Egg Carrier.

Knuckles was soon after sent back to the past after finding more shards where he saw Tikal trying to convince Chaos to flee the Altar of Emerald along with the Chao. Finding himself back at the present-day altar, Knuckles tried restoring the Master Emerald, only to see it still missing a few pieces. From an image inside the Master Emerald, Knuckles saw the Egg Carrier and deduced it was there where the last Emerald Shards remained. Knuckles soon after stumbled upon E-102 Gamma and trailed the robot to the Egg Carrier where Knuckles found the remaining shards, only to be sent to the past again, this time to see the altar ablaze where he tried asking Tikal what was going on but was immediately sent back to the present. Back on the Egg Carrier, Knuckles briefly met Sonic as he was heading after Eggman. As Knuckles wished Sonic well, the latter left the echidna to battle off Chaos 6. Knuckles subsequently defeated Chaos and got retrieved its six Chaos Emeralds before returning home with all the Emeralds and Emerald Shards where he restored the Master Emerald, allowing it to return Angel Island back to the sky.

The six Chaos Emeralds left by Chaos, from Sonic Adventure DX: Director's Cut.

Not long after, the Angel Island fell down again, and Knuckles decided to find Sonic to ask for advice, believing the Chaos Emeralds he brought back had something to do with it. Soon after, however, he discovered Eggman and was ambushed by Chaos, who took his Chaos Emeralds. Later found by Sonic and Tails, Knuckles informed them of Chaos's return and that it would destroy the world using the Chaos Emeralds, before taking off himself to deal with the threat. Arriving in Station Square where Perfect Chaos was on a rampage, Knuckles found four of the now-drained Chaos Emeralds and brought them to Sonic while his other friends brought the remaining three, where he reluctantly agreed with Tails that Sonic could still harness the Chaos Emeralds' positive energy to stop Chaos.

After Super Sonic had defeated Perfect Chaos, Knuckles looked on with content as Chaos was returned to a peaceful creature once more and departed with Tikal.

Sonic the Hedgehog Pocket Adventure

Knuckles with his Chaos Emerald, from Sonic the Hedgehog Pocket Adventure.

In Sonic the Hedgehog Pocket Adventure, Knuckles attacked Sonic for unknown reasons when he came across the hedgehog. Upon his defeat, Knuckles dropped the Chaos Emerald he was holding. After Sonic claimed the Emerald however, Dr. Eggman ambushed them and took the Emerald before leaving Knuckles and Sonic to get crushed by the collapsing cave they were in. Using his last strength, Knuckles got Sonic out of the cave by sending him flying out of it with an uppercut. Some time later, Knuckles got his Chaos Emerald back. Shortly after, he saw Sonic and Tails fly by in the Tornado.

Sonic Shuffle

Knuckles heading into Maginaryworld, from Sonic Shuffle.

In Sonic Shuffle, Knuckles, Sonic, Tails, and Amy were suddenly transported to the Temple of Light in Maginaryworld. There, they met Lumina Flowlight who had brought them here to help restore the Perfect Precioustone which had been shattered by Void and made their guardian, Illumina, disappear. With Void now posed to destroy Maginaryworld with the Precioustone gone, Knuckles agreed to help with the others. While finding the Precioustone and restoring the world affected by Void, Knuckles had a dream where he met Void. Knuckles and the others initially opposed Void but eventually saw that Void was lonely and sad which touched their hearts, and they soon saw that Void and Lumina were two halves of the same whole.

After having brought the Precioustones to the Temple of Light, Knuckles and the others returned there when Void went for the Perfect Precioustone again. There, Void's despair transformed him into a monster. Knuckles and the team defeated Void, but Lumina fell into despair as the Perfect Precioustone was not recovering. When Sonic found Void in the form of a dark gem, Knuckles helped get Lumina to accept Void by noting how negative feelings were needed for dreams to flourish. With Lumina's hope restored, Knuckles and the group saw her restoring the Precioustone, and Lumina and Void remerging back into Illumina. With Maginaryworld restored to an even better place, Knuckles and the gang received Illumina's gratitude before returning home.

Sonic Adventure 2

Knuckles fighting Rouge over the Master Emerald, from the 2012 remaster of Sonic Adventure 2.

In Sonic Adventure 2, Knuckles discovered the Master Emerald had been stolen by Rouge the Bat. Tracking her down, Knuckles had an ownership dispute with Rouge over the Emerald until it was stolen by Dr. Eggman, who had tracked its signal. Rather than letting Eggman have it, Knuckles shattered the Master Emerald and scattered its Emerald Shards to prevent the theft. With Rouge berating him for his action, Knuckles began hunting down the shards before Rouge could get them. After gathering some shards on the way, Knuckles got lost inside the Aquatic Mine and ended up in Central City, where he met Tails and Amy, only for Amy to drag him into Sonic's latest adventure, where they were trying to stop Eggman from using the Eclipse Cannon to take over the earth.

Having located Eggman on Space Colony ARK, Knuckles led the group to Eggman's base, having seen both Eggman and Rouge enter it. Believing there was a space shuttle there that could take them to the ARK and destroy the Eclipse Cannon, Knuckles, and the team infiltrated the base, where Knuckles found the keys to the center at Sonic's choice, before having a fight with King Boom Boo. At the shuttle's launch pad, Knuckles and the others were ambushed by Eggman with the Egg Golem. While Sonic defeated the Egg Golem, Knuckles and the others got a space shuttle to take off in. While on route to Space Colony ARK, however, the shuttle hit a stray asteroid, causing the cargo bay to open and releasing all the Emerald Shards Knuckles had stored there. Panicking, Knuckles tried taking control of the shuttle, only to cause it to crash into the ARK. After landing, Knuckles left the group to find the lost shards.

Knuckles saving Rouge's life, from the 2012 remaster of Sonic Adventure 2.

After finding some shards, Knuckles met Rouge again and fought her to a stalemate. However, as Rouge lunged towards the Master Emerald, she tripped and began falling towards a lava pit, but Knuckles saved her life, only for Rouge to show ingratitude to him. Regardless, she returned the Emerald Shards she had found as thanks. After restoring the Master Emerald, Knuckles left with it, but not before swallowing his pride and apologizing to Rouge for hurting her. No sooner, Knuckles found Sonic appearing in front of him after he had escaped from a doomed capsule using Chaos Control with a fake Chaos Emerald, who told Knuckles to go help Tails and Amy as he left to destroy the Eclipse Cannon.

Knuckles using the Master Emerald in the cannon's core, from Sonic Adventure 2.

After the Eclipse Cannon had been stopped, Knuckles and Sonic met Rouge, who told them that the ARK was on a collision course with earth, although Knuckles thought by her appearance that she was still after the Master Emerald. Knuckles and the others then saw a recording of Gerald Robotnik announcing to the world that the ARK's impact would destroy the planet as his vengeance against humanity for the death of his granddaughter, Maria. Banding with Eggman, Knuckles and the group came up with the plan to use the Master Emerald to deactivate the seven Chaos Emeralds, which were powering the cannon's core, to stop the Space Colony's crash course. When Knuckles and Sonic made it to the core, they were attacked by the Biolizard, but Shadow arrived to distract it. Knuckles used the Master Emerald to stop the Chaos Emeralds, but the Biolizard warped outside and fused with the ARK, becoming the Finalhazard, to keep the ARK on its collision course. Knuckles then watched Sonic and Shadow use the Chaos Emeralds to transform into Super Sonic and Super Shadow before leaving to defeat the Finalhazard. He and the others advised the two through transmission lines.

After Super Sonic and Super Shadow beat the Finalhazard and brought the ARK warped into orbit, Knuckles saw Sonic return alone, informing them that Shadow had seemingly died. Knuckles then asked Rouge what she planned to do and was content to hear she considered giving up treasure hunting before they returned to Earth.

Sonic Advance series

Sonic Advance

In Sonic Advance, Knuckles joined forces with Sonic, Tails, and Amy to stop Dr. Eggman from obtaining the seven Chaos Emeralds. Over the course of their adventure, Knuckles and the others got the Chaos Emeralds first and chased the doctor to the X-Zone. After they defeated the Egg X, Knuckles, Tails, and Amy returned to Earth while Super Sonic faced Eggman in a final confrontation on the moon. There, they awaited Sonic's return but grew confused when he did not show up. A few days later, though, Sonic finally returned.

Sonic Advance 2

In Sonic Advance 2, Knuckles was kidnapped alongside Tails by Dr. Eggman when the evil scientist attempted once more to create the Eggman Empire. After being captured, Knuckles was somehow tricked by Eggman into fighting Sonic.

Knuckles trying to explain himself to Sonic, from Sonic Advance 2.

In Sky Canyon, Knuckles intercepted Sonic and his allies in the Egg Saucer but was defeated. Realizing that he had been tricked, Knuckles tried to defend himself but was chided by Sonic. When Sonic then tried to leave, Knuckles joined him, wanting payback at Eggman.

After hunting down and seemingly beating Eggman, Knuckles, Sonic, Tails, Cream, and Cheese found Vanilla who had gone missing, only to see her being kidnapped by Eggman in his new mech. Knuckles then witnessed Sonic using the Chaos Emeralds to become Super Sonic and taking off to rescue Vanilla and stop Eggman. When Sonic returned with Vanilla, Knuckles congratulated Sonic for a job well done.

Sonic Advance 3

In Sonic Advance 3, where the Earth was split into seven regions by a massive Chaos Control induced by Dr. Eggman, Knuckles met Sonic and Tails in Sunset Hill. Seeing the trouble, Knuckles joined his friend to help, despite being declined by Sonic.

Traveling across the different regions, Knuckles and his friends eventually got the seven Chaos Emeralds and had Amy and Cream join them. Along the way, Knuckles also faced Dr. Eggman's newest creation, Gemerl, a rebuilt version of Emerl. Eventually, Knuckles and his friends got to the Emerald Altar where they beat the Hyper EggRobo and used the Master Emerald to return the world to normal. Later, following Sonic's return from his and Eggman's battle with Ultimate Gemerl, Knuckles remained behind at the Master Emerald's shrine and watched on satisfied as his friends took their leave.

Sonic Pinball Party

In Sonic Pinball Party, right after Sonic had foiled another of Dr. Eggman's attempts at world domination, Knuckles enrolled himself in Casinopolis's Egg Cup Tournament. His first opponent, however, was none other than Sonic, who had joined the tournament to foil Eggman's latest scheme. Refusing to lose to Sonic, Knuckles competed against him, but was soundly defeated. Although sour about his loss, Knuckles advised Sonic to keep his guard up. Later, after Sonic defeated Eggman, Knuckles saw Sonic liberate Eggman's prisoners in Casinopolis.

Sonic Heroes

In Sonic Heroes, Knuckles and Tails received a letter from Dr. Eggman, who claimed to have created "the ultimate weapon" to conquer the world and challenged them to stop him within three days. Using the Tornado 2, Knuckles and Tails found Sonic and brought him the news. As Knuckles was confident they could handle it, he and Tails joined Sonic in stopping Eggman's scheme, officially forming Team Sonic.

Beginning their mission by tracking Dr. Eggman, Team Sonic found the doctor at Ocean Palace, where they were attacked by the Egg Hawk. Though the team defeated the machine, Eggman escaped. Knuckles and Team Sonic then followed Eggman to Grand Metropolis, where the team freed the city from Eggman's control and escaped from the Power Plant, before running into Team Rose, who they managed to give the slip.

Arriving in Casino Park, Knuckles was taken back by the place but was pushed on. As they got through the city, Eggman attacked them with his Robot Carnival, but Team Sonic defeated the horde. Following Eggman to Rail Canyon and only having until sunset, Knuckles and his team headed for Bullet Station and destroyed Eggman's base there. Team Sonic found Eggman in the Egg Albatross and destroy it. It was then, however, that Knuckles and the team discovered that the Eggman they had been chasing was a copy and that their challenge was to distract them while Eggman launched his Egg Fleet. As Sonic took off, Knuckles quickly followed him.

Knuckles threatening Rouge and the rest of Team Dark after her comment, from Sonic Heroes.

Following Eggman through the jungle, Team Sonic met Team Dark and saw Shadow was still alive. As an argument arose about who would take down Eggman, the two teams fought each other. After the battle, Team Sonic followed Eggman and Shadow to Hang Castle, where Knuckles teased Tails by saying that it could have been Shadow's ghost they saw. After infiltrating the castle and escaping Mystic Mansion, Team Sonic was attacked by Eggman's Robot Storm but defeated it.

After that, Team Sonic got to the Egg Fleet and went straight for the Final Fortress where they destroyed the colossal flagship's core. Team Sonic then found Eggman in his Egg Emperor and defeated him. After destroying much of the Egg Fleet, Knuckles teased Sonic with how he would have stood no chance without their help, but was surprised when Sonic agreed and thanked him and Tails. Knuckles and Tails then watched Sonic run away as Amy arrived.

Knuckles insisting on helping Sonic in the final battle against Neo Metal Sonic, from Sonic Heroes.

Later, Team Sonic and the other teams saw the return of Metal Sonic, who had been staging the teams' adventures and impersonating Eggman so he could follow them and copy their data for a plan to conquer the world himself, as he transformed into Metal Madness. Seeing that the teams had collected all the Chaos Emeralds, the real Dr. Eggman came up with the plan of using them against Metal Sonic. When Sonic decided to face Metal Sonic alone, Knuckles insisted on going with him along with Tails. While Team Sonic charged the Chaos Emeralds, Team Rose, Dark, and Chaotix fought Metal Madness to buy them some time.

When Metal Madness transformed into Metal Overlord, Knuckles and Tails were given their own Super States by Sonic as he transformed into Super Sonic. The team then took off and defeated Metal Overlord. Back on the flagship, Knuckles watched Sonic leave, before chasing after Rouge once she said she would steal "someone else's treasure." Soon after, Knuckles joined Sonic and Tails as they headed off to find their next adventure.

Sonic Battle

Knuckles meeting Emerl, from Sonic Battle.

In Sonic Battle, Knuckles heard the news that an E-121 Phi had been robbing jewelry stores. Later, Knuckles met up with Sonic, Tails and Emerl, a Gizoid Sonic had found, who had come to ask for the Chaos Emerald in his possession to develop Emerl. Knuckles, however, mistook Emerl for the E-121 Phi and attacked him but was defeated. Knuckles then relinquished his Chaos Emerald and learned about Emerl's abilities and that Dr. Eggman and Rouge were after him, making him suspicious.

Later, Knuckles met Tails and Emerl, where he, after a brief fight with Emerl, was then told by Tails to come to Emerald Beach when their path was blocked by Chaos Gamma. In the end, Knuckles took care of Gamma alone, allowing Tails and Emerl to leave. When Chaos Gamma escaped, Knuckles got to Emerald Beach, where he saw Rouge leave and heard what had happened from Sonic. When Knuckles tried to ask Emerl, he became infuriated as Emerl continued to ignore him, especially upon Sonic's orders, which made Knuckles fight both of them.

Later, after Emerl had been stolen by Rouge, Knuckles and Tails aided Sonic when he fought Rouge to get Emerl back, with Rouge eventually surrendering Emerl. Later on, when Knuckles learned about how Emerl needed Chaos Emeralds and that he grew stronger the more he fought, he vowed to help realize Emerl's full potential. Finding Emerl with Tails in Emerald Town, Knuckles trained with him until they heard the news saying that an E-121 Phi was in Night Babylon and Knuckles took Emerl with him to deal with it.

In Central City, Knuckles briefly came across Amy, only to be attacked by Chaos Gamma. After forcing Chaos Gamma to leave, Knuckles encountered Rouge, who filled him in on Chaos Gamma and learned the robot wanted revenge at Emerl. After processing this, Knuckles and Emerl continued to Night Babylon. There, they met a clerk who mistook Emerl for a Phi and called a Guard Robo. After destroying it and escaping, Knuckles lost his temper and yelled at Emerl and upset him. Apologizing for his outburst, Knuckles had Emerl wait while he went into a casino. When Knuckles returned, however, Emerl was gone, and he began looking for him. After several skirmishes with store clerks, Knuckles found Emerl with Rouge. Knuckles thought Rouge was after Emerl, but he found her innocent. Just then, they found the Phis. Knuckles and Emerl proceeded to destroy them and got their Emerald Shards before being given an Emerald Shard from Rouge as well who suggested they ask Tails about the Emerald Shards.

Heeding Rouge's advice, Knuckles returned to Tails who explained they could get a whole Chaos Emerald if the collected two more shards from the Phis. Knuckles then left with Emerl to train him and fought him to settle their score. After their battle, Dr. Eggman appeared and attacked them with a Phi, but Knuckles and Emerl defeated it, claimed its Emerald Shard and chased Eggman.

Knuckles acknowledging Emerl as his battle partner, from Sonic Battle.

Finding Eggman in Central City, Knuckles and Emerl destroyed another Phi and took its Emerald Shard. There, Knuckles acknowledged Emerl as his battle partner, before hearing Eggman say that he was heading to Gimme Shelter as he escaped.

As Knuckles entered Gimme Shelter, he was caught in Eggman's "spiky rodent trap," and Eggman revealed that he had tricked him into coming. As Eggman announced the plan to have Emerl absorb his Final Egg Blaster, Knuckles was left in Chaos Gamma's hands, but Emerl defeated it. Afterward, Knuckles asked Emerl to free him, but Emerl began mocking him for his lack of strength, infuriating him enough to try breaking free himself until Emerl shut the trap down, causing Knuckles to hurl himself due to his struggling. Heading back to Emerald Town, Knuckles had Tails use their Emerald Shards to make a whole Chaos Emerald, which they gave to Emerl. As Tails wondered what happened during the pair's adventure, Knuckles asked Emerl to keep it a secret that he got tricked by Eggman. Regardless, Emerl still told Sonic, who had just arrived, and Tails, making Knuckles explode with anger.

Later on, Knuckles met Emerl again, who had come to fight him under direction from Shadow so that Emerl could fight the latter. Later, when Eggman revealed his newest Death Egg and its Final Egg Blaster, Knuckles met up with Sonic, Tails and Emerl at Holy Summit, where he revealed that Chaos had returned, a sign of danger. As Emerl went to the Death Egg to stop Eggman, Knuckles and the others watched Emerl back on earth.

When Eggman was defeated, however, Eggman fired the Final Egg Blaster, destroying some stars. The sudden release of enormous amounts of energy caused Emerl to revert to his original destructive programming. However, Eggman could not control Emerl as excepted, and Emerl prepared to fire the Final Egg Blaster at earth. Knuckles then urged Sonic on as he went to the Death Egg to stop Emerl with the Master Emerald. When that failed, Sonic had no choice but to destroy Emerl. Once the deed was done, the world was saved, though everyone mourned Emerl's death.

Sonic Jump series

Sonic Jump (2005)

In Sonic Jump, Knuckles encountered Dr. Eggman on Angel Island. The doctor demanded that Knuckles handed over the Chaos Emerald he had, but he refused. Unfortunately, when Knuckles turned around to see Sonic and Tails' arrival, Eggman snatched the Emerald. Now possessing all the Chaos Emeralds, Eggman gloated to the heroes that he planned to harness the Emeralds' power to create the "Brainwash Beam", which would let him take over the world, before taking off. As Knuckles then began arguing with Sonic over whose fault this was, Tails stopped them. Tails then suggested that Eggman needed to head into space in order for the Brainwash Beam to cover the whole world. As such, Knuckles and his friends headed for South America, which was supposedly where Eggman had a space station to launch a rocket from. When they arrived however, Eggman had already prepared the rocket launch and was heading into space. Not willing to give up, Sonic asked for a way to catch up to Eggman and Tails replied that it was possible using the space station's controls. Contend with letting Sonic go after Eggman, Knuckles remained on Earth to guard the space station while Sonic went into space.

After Sonic destroyed the space satellite containing the Brainwash Beam, Knuckles and Tails found Sonic after he crash-landed on Earth. As Knuckles praised Sonic's luck and headstrongness, he asked him about the Chaos Emeralds, only to learn, much to his dismay, that they got scattered across the globe after the space station blew up. After the heroes re-gathered the Emeralds however, Sonic noticed that one was missing, which he suspected was in Eggman's possession. With Knuckles believing that Eggman was hiding out in space, Sonic went there and got the Emerald back after defeating Eggman. After Sonic returned though, Knuckles had a feeling that they had not seen the last of Eggman.

Sonic Jump (2012)

In Sonic Jump (2012), Knuckles and co. discovered that Eggman had begun kidnapping Animals again and taking them high into the sky, prompting the heroes to set out to stop Dr. Eggman's operations. Whenever they managed to corner Eggman in a Zone and defeat him however, the doctor would retreat to another Zone, although not before capturing more Animals. After Eggman's defeat in Mechanical Zone however, the doctor would crash down to Earth, ending his plans, thus allowing Knuckles to reunite with all the Animals.

Shadow the Hedgehog

In Shadow the Hedgehog, Knuckles left his post on Angel Island and joined forces with most of his friends and GUN's forces to repel the Black Arms invasion of earth. He appears during Shadow's Hero missions, where he asks Shadow for assistance against the Black Arms.

Glyphic Canyon

Knuckles in Glyphic Canyon, from Shadow the Hedgehog.

Arriving in Glyphic Canyon, Knuckles attempted to assist GUN by driving off the Black Arms infesting the area. There, he met Shadow, who had just been teleported to the ruins by Black Doom. Upon meeting him, Knuckles filled Shadow in on the Black Arms around them and requested his assistance in clearing the area of the Black Arms.

In the Hero scenario, where Shadow accepted Knuckles' request, Knuckles and Shadow managed to drive the Black Arms out of the area, and as well find one of the Chaos Emeralds amongst the ruins.

Central City

Knuckles in Central City, from Shadow the Hedgehog.

In Central City, Knuckles discovered that the Black Arms had set up bombs across the city that would destroy the entire city, a tragedy that Knuckles did not intend to come true. When there were only a few minutes left until the bombs would explode, Knuckles noticed Shadow had arrived in Central City and asked for help defusing the bombs, aiding G.U.N. as they sent in their bomb squads to defuse the larger ones.

In the Hero scenario, where Shadow accepted Knuckles' request, Knuckles and Shadow succeeded in defusing enough bombs and managed to save the city, buying time for the President to be evacuated by the Commander and GUN to their headquarters via a G.U.N. flying battleship.

Black Comet

Knuckles in the Black Comet, from Shadow the Hedgehog.

Having gotten onboard the Black Comet, Knuckles assisted G.U.N. in attacking the Black Arms' base, with Knuckles planning to destroy the comet's core. On his way to the core, Knuckles came across Shadow and asked him for his help to get to the center.

In the Hero scenario, where Shadow accepted Knuckles' request, Knuckles and Shadow made it to the center of the Black Comet, where they found the Chaos Emerald that the Black Arms had stolen. Though Shadow refused to follow Knuckles any further, Knuckles still came to Shadow's aid when the hedgehog was attacked by Dr. Eggman and his Egg Dealer. Eventually, the two destroyed Eggman's contraption and claimed the final Chaos Emerald before Shadow personally ended Eggman's life.

Last Story

In the Last Story, Knuckles arrived with Sonic, Tails, Amy, Rouge and Dr. Eggman to stop Shadow from giving the Chaos Emeralds to Black Doom. Black Doom, however, took the Emeralds and used an enhanced Chaos Control to transport the Black Comet to the surface, planning to use humans as energy sources for his kind. As Knuckles prepared to act, he and the others were paralyzed by a special nerve gas, and Black Doom unleashed the Death leeches to prey on them. Shadow, however, proved to be immune to the gas, and he left Knuckles and the others behind as he pursued Black Doom.

Knuckles and the others eventually escaped the Black Comet and found some shelter from where they cheered Super Shadow on as he fought and defeated Devil Doom. Knuckles then witnessed Super Shadow sending the Black Comet back into space and blowing it up with the Eclipse Cannon. As Eggman then tried to sneak away to claim the Chaos Emeralds, Knuckles furiously chased after him.

Sonic Rush

Knuckles asking Cream to introduce him to Blaze, from Sonic Rush.

In Sonic Rush, Knuckles was walking around on his own when he met Cream and her new friend Blaze the Cat. As he was introduced, Knuckles got angry when Cream mentioned his shortcomings but then noticed that Blaze held a Sol Emerald. Sensing that its power was similar to Chaos Emerald energy and thus a Chaos Emerald, Knuckles advised Blaze that she gave it to Sonic for safe keeping. Blaze, however, denied his claim of having a Chaos Emerald and tried to leave, but Knuckles thought she was lying and tried to chase after her. During the chase, however, he was buried under a pile of rocks by Blaze.

Eventually, Knuckles pulled himself out of the rocks and met Sonic and Tails. Knuckles then told them how Blaze got him stuck there and took off to punch some things to vent his anger, inadvertently opening a path blocked by rocks. Following that, Knuckles searched for Blaze to get some payback and eventually found her with Cream and Amy but was held back by Amy while Cream and Blaze escaped.

In the aftermath of Sonic and Blaze's final battles with Dr. Eggman and Eggman Nega, Knuckles joined up with the others in celebration, where he warned Sonic that Amy was coming.

A while afterward, Knuckles, along with Sonic, Tails, Amy and Cream, came to Blaze's aid when Eggman and Eggman Nega drained the Sol Emeralds of their power to conquer both Sonic's dimension and Blaze's world. With Knuckles and the others supporting her, Blaze recharged the Sol Emeralds, becoming Burning Blaze, and joined up with Super Sonic, and together, they defeated the doctors and saved their worlds.

Sonic Riders series

Sonic Riders

In Sonic Riders, Team Sonic arrived in Future City in search of a Chaos Emerald when the Babylon Rogues appeared. When Tails read that they had the Emerald, Knuckles aided Sonic in intercepting the Rogues and managed to knock Storm off his Type-S. Knuckles and Tails then followed Sonic when he chased after Jet, only for the two to find him knocked down as the Babylon Rogues escaped.

The next day, the team saw Dr. Eggman on the local monitors, announcing the EX World Grand Prix, and that the entry fee for the contestants was a Chaos Emerald, with the winner getting to claim all seven. Seeing that the participants Dr. Eggman had found were none other than the Babylon Rogues, Knuckles and the team decided to enter the competition.

After the qualifications rounds, Knuckles and his team met Amy, who had also signed up for the tournament so she could keep an eye on Sonic. After then hearing Tails explain the legends about the Babylon Rogues and Babylon Garden, Knuckles wondered how Extreme Gears worked, but found Tails' explanation too confusing. Just then, Wave came by and mocked Tails' Blue Star, much to Knuckles' annoyance. Shortly after though, Knuckles and the others had to hurry out to next race.

Knuckles and Storm meeting in the Egg Factory, from Sonic Riders.

After the race, Knuckles was walking through the Egg Factory when he bumped into Storm. Recognizing him, Knuckles wanted to settle the score between them. When Knuckles and Storm heard that the next race was about to start, however, they decided to settle their dispute on the racetrack. In the end, Knuckles won the race.

Before the semifinals, Knuckles and Tails watched Sonic practice his Extreme Gear techniques until Jet appeared to mock Sonic before leaving. Eventually, Knuckles and his team got to the finals, which Jet won after Wave sabotaged Sonic's Blue Star. They then witnessed Jet claim and use the seven Chaos Emeralds in tandem with the Key to Babylon Garden to reveal Babylon Garden itself, with the intention of claiming its treasure. Eggman, however, stole the Key so that he could take the treasure for himself, believing it to be technology that he could use to conquer the world. Knuckles and Tails followed Sonic however, as he headed out to stop Eggman.

Using the Tornado 2, Knuckles and Tails got to Babylon Garden, while Sonic took off on the midway to chase Eggman. There, they met Wave and Storm, and Knuckles got ready to fight Storm but had to stop when a flock of E-10000 robots attacked. Chasing after Wave and Storm, Knuckles and Tails got to Sonic's location as Sonic stopped Dr. Eggman and returned the Key to Babylon Garden to the Rogues. Knuckles and the others were about to leave when Amy arrived and chased furiously after Sonic for attacking Eggman while he held her hostage. They heard a heard a roar and decided to check it out. Arriving inside the Babylon Garden, Knuckles and the group saw that the Babylon Rogues had awoken the Babylon Guardian, and were then forced to fight it.

After beating the Babylon Guardian, the group found the treasure of Babylon, which was revealed to be a Magic Carpet, much to the disappointment of Eggman. With the whole ordeal over, Team Sonic and the Babylon Rogues went their separate ways, knowing they would meet again some day.

Sonic Riders: Zero Gravity

In Sonic Riders: Zero Gravity, a few months after the EX World Grand Prix, Knuckles was driving with Sonic and Tails through Monopole with a mysterious meteorite Tails had found the other night.[19] On their way to Megalo Station, however, Knuckles and the others were attacked by SCR-HD and a group of SCR-GP, a part of a currently global robot rampage who were after the meteorite. In the insuring chase, the group crashed and fell out a 300-story building, though Knuckles and Tails saved themselves by flying while Sonic was saved by the meteorite which could manipulate gravity.

Knuckles, Sonic, and Tails hiding from the robots, from Sonic Riders: Zero Gravity.

After that, Knuckles and the group tried to hide from the robots, where they met Amy, who was being chased by the robots because she had a meteorite similar to theirs. The group then decided to go to MeteorTech, who created the robots, for answers. There, Knuckles and the gang were discovered by security, but the Babylon Rogues arrived, and Jet repelled the security robots with another meteorite. As the Babylon Rogues demanded their meteorites, called the Arks of the Cosmos, Knuckles was ready to fight but had to wait when more robots showed up.

Arriving in the control room, the group were surprised to find Dr. Eggman, who owned of MeteoTech, though Eggman claimed to have no part in the global robot rampage. However, when Eggman recognized Sonic's Ark of the Cosmos, Knuckles threatened the doctor to tell them what he knew. Eggman then revealed that MeteoTech’s computer was powered by one of the Arks of the Cosmos and that the robot leader, SCR-HD, which also had an Ark of the Cosmos, sought them out for reasons unknown. The group then noticed Amy was gone and saw her being chased by SCR-HD and Storm on a computer screen, and Team Sonic left to save her.

When they found Amy, Knuckles and the others learned that SCR-HD had suddenly blown up and Storm had taken its Ark of the Cosmos. However, Tails deduced that they had to remove the Ark of the Cosmos in MeteoTech’s mother computer to stop the rampaging robots. As they tried to figure where the mother computer could be, Amy remembered a place Storm mentioned with info on the Arks of the Cosmos, which Knuckles recognized it as Gigan Rocks and personally lead the group there.

Knuckles translating the inscriptions in Gigan Rocks, from Sonic Riders: Zero Gravity.

Arriving at Gigan Rocks, Knuckles translated the ancient scripts there, and they learned that the Arks of the Cosmos were ancient power units for Babylon Garden. After then seeing the Babylon Rogues chase after Eggman above them, Knuckles translated some more inscriptions, which helped the group figure out the location of the MeteoTech’s computer mother. When they arrived there, Knuckles and the others found the Crimson Tower and the Babylon Rogues, who revealed that Eggman had stolen their Arks of the Cosmos. Understanding that Eggman planned to use the Arks of the Cosmos to control all the world's robots and conquer the world, Knuckles and the others raced against the Babylon Rogues to Eggman.

At the end of the race, Eggman was stopped, and the robot rampage came to an end. After Babylon Garden had appeared due to all Arks of the Cosmos being present and handing over their Arks of the Cosmos, Knuckles, Sonic and Tails were about to leave when SCR-HD appeared and took all five Arks of the Cosmos to Babylon Garden. This transformed Babylon Garden into Astral Babylon, forming a black hole that threatened to consume the planet. Knuckles, Tails and the Babylon Rogues then followed Sonic to Astral Babylon to disconnect the engine where they faced Master Core: ABIS and defeated it, saving the world.

Later, Knuckles, Sonic, Amy, and Tails returned to Monopole, where Tails told Knuckles and the rest of how the Arks of the Cosmos made the robots to go amok. Knuckles and then others then saw Jet flying by, who challenged Sonic to a new race, which Sonic accepted.

Sonic Free Riders

Knuckles, from Sonic Free Riders.

In Sonic Free Riders, Knuckles, Sonic, and Tails signed up to compete in the second World Grand Prix hosted by Dr. Eggman for the sake of the competition rather than the prizes. As Omochao interviewed them before the competition, Knuckles was itchy to begin.

During the first round, Team Heroes faced Team Rose, who Knuckles hardly considered threatening. Additional, he was annoyed by Amy berating of Sonic for not going easy. Though Team Heroes eventually beat Team Rose, Knuckles insisted they should not let their victory go to their heads.

For their next race, Team Heroes faced Team Dark. When Knuckles went up against E-10000B, however, he heard the robot making clicking sounds and moving around funny. After the race, Knuckles blamed E-10000B for foul play, but no proofs of his claims could be found. Regardless, Team Heroes still beat Team Dark.

Having advanced to the finals, Team Heroes met went up against Team Babylon, with Knuckles aggressively ready to face them for the championship. Over the course of the team face-off, Knuckles supposed both his team and mocked Team Babylon as their victory slipped away. After defeating Team Babylon, even when the opposing team was given a second chance due to mechanical trouble, Knuckles was asked for comments and said that that he had a good time since he managed to shut Jet up.

As the tournament progressed, Team Heroes had their fair share of losses, while Knuckles remaining dedicated to the competition and his team. At the end of the tournament, Knuckles and the other teams went to the awards ceremony to collect their prizes, but Eggman made all of the competitors race his "ultimate Gear-jockey robot." After the race, Eggman revealed that he used the World Grand Prix to get the riders' racing data with his E-10000 robots to create the ultimate Extreme Gear which he could use for his own agenda, which Knuckles knew confirmed his suspicion about E-10000E. Eggman then challenged Knuckles and the others to a race but lost. As Knuckles mocked Eggman for his defeat, Metal Sonic revealed himself as the one controlling E-10000B and passing fake data to Eggman, while taking the real data himself in an effort to beat Sonic in Extreme Gear riding.

Knuckles and the others following watched as Metal Sonic challenged Sonic to a race, in which Sonic defeated his robot copy. Afterward, as the World Grand Prix came to a close and everyone began to leave, Knuckles blamed Eggman for all the trouble they had to face during the tournament.

Sonic the Hedgehog (2006)

Knuckles with Eggman's message, from Sonic the Hedgehog (2006).

In Sonic the Hedgehog (2006), Knuckles saw Dr. Eggman on the outskirts of Soleanna and received a message from the doctor, who told him to give it to Sonic. Telling Tails he wanted to see Sonic, Knuckles awaited Sonic's arrival until he got there and gave him the message. From it, the trio learned that Eggman demanded Sonic's Chaos Emerald in exchange for the return of Princess Elise.

Despite being certain it was a trap, Knuckles, Sonic and Tails went to White Acropolis. When Sonic handed over the Chaos Emerald, however, Eggman sent them to an apocalyptic future with a time machine. There, they met Shadow and Rouge. The group then decided to work together to get home by finding enough Chaos Emeralds for a Chaos Control powerful enough for time travel.

While searching for the Chaos Emeralds, Knuckles, Sonic, and Tails briefly saw Silver and Blaze talking with Mephiles before they went back in time. The group then learned from their database that Elise would die in the Egg Carrier's future crash-landing. Locating a Chaos Emerald in Flame Core, Sonic his friends met up with Rouge and Shadow and went to the central volcano, where Rouge found the Emerald only for Iblis to attack them. After defeating Iblis, Sonic and Shadow use their two Chaos Emeralds to create a time-space rift, which Knuckles, Sonic, and Tails used to return to the present. After that, Knuckles helped find information on Elise's whereabouts. Later on, Knuckles helped Sonic through Aquatic Base to save Elise from her imminent death onboard the Egg Carrier.

Knuckles, Tails, and Amy having arrived in the End of the World, from Sonic the Hedgehog (2006).

Later on, Knuckles passed through Soleanna Castle Town with Tails and Amy when they were suddenly caught in a spatial distortion created by Solaris and send to End of the World, where they met Shadow, Silver, Rouge, E-123 Omega and Eggman. There, they also found Elise and Sonic, and Knuckles saw to his shock that Sonic was dead, having been killed as a part of Mephiles' plan to remake Solaris. As Solaris prepared to consume time itself, Knuckles opted to destroy him, but it was deemed impossible due to Solaris' temporal omnipresence and Sonic's passing. When Elise sensed that Sonic's soul was still among them, however, Knuckles and the others collected the seven Chaos Emeralds to revive Sonic. After Elise revive Sonic as Super Sonic, Knuckles stood behind and supported Super Sonic, Super Shadow, and Super Silver as they defeated Solaris before they all were engulfed in light. When Sonic and Elise then ensured Solaris never came to exist; time was reverted, resulting in the events and memories of the adventure being erased and Knuckles to be returned to where he was prior to the events.

Sonic Rivals series

Sonic Rivals

In Sonic Rivals, Knuckles was guarding the Master Emerald when it suddenly disappeared. His search for the Master Emerald eventually took him to Onyx Island where he saw who he believed was Dr. Eggman, but was really Eggman Nega disguised as Dr. Eggman (Knuckles, however, does not realize this throughout the game) with Sonic, and he suspected the doctor was behind the theft. Confronting Eggman Nega, the doctor showed he had turned the Master Emerald into a card with his special camera. Meanwhile, Sonic asked Eggman Nega where Tails and Amy were, and Eggman Nega showed that he had turned them into cards too. As Eggman Nega escaped, Knuckles raced Sonic to the doctor.

After they had found Eggman Nega, the doctor attacked in the Egg Turtle which they defeated. After the doctor had escaped, Knuckles met Shadow, who also looked for Eggman Nega. However, when Shadow criticized him for letting the doctor escape, Knuckles raced Shadow to find Eggman Nega first. When they reached Eggman Nega, Knuckles demanded the Master Emerald back, but the doctor attacked them in the Egg Falcon, which they defeated.

After the battle, Knuckles was teleport to another area by Eggman Nega with the Master Emerald. There, he met Silver, who had come to bring Eggman Nega back to the future. After answering Silver's questions, Knuckles started asking him, but Silver did not answer, provoking Knuckles to chased after him. Eventually, Knuckles found Eggman Nega and asked how he stole the Master Emerald only to be told that Onyx Island was Angel Island before he was attacked by Metal Sonic. After beating Metal Sonic, Knuckles pondered about how Onyx Island could be Angel Island when he met Shadow. As Shadow berated him for letting the doctor get away again, Knuckles raced Shadow to Eggman Nega.

When Knuckles found Eggman Nega, the doctor explained that Onyx Island was Angel Island from the future, before he attacked with the Egg Lynx. After defeating the machine, Knuckles tried to make sense of what Eggman Nega said when he met Sonic and Tails. Not wanting Sonic to outdo him as he seemed to know where the doctor was, Knuckles raced Sonic to Eggman Nega.

When they found Eggman Nega, Knuckles demanded a full explanation. Eggman Nega then revealed that the Master Emerald disappeared because he turned it into a card in the future, which due to the Master Emerald's properties made it disappear in all time frames, and that he then used it to transport the Angel Island in the future to the present as Onyx Island. Deeming Eggman Nega responsible for all this, Knuckles defeated both the Egg Kong and Metal Sonic. Frustrated at his constant defeats, Eggman Nega told Knuckles that he now planned to turn the world into a card and escaped. Sonic and Tails then showed up in the Tornado when they were heading to Eggman Nega’s base, and Knuckles teamed up with them to stop Eggman Nega. On their way through Eggman Nega’s base, Knuckles and Sonic met Shadow and Silver, and they all put aside their differences to stop Eggman Nega.

At the center of the base, Knuckles and the others found a large spaceship with Eggman Nega’s special camera equipped on that he planned to use to turn the world into a card. Knuckles then noticed that Eggman Nega planned to fuel the device with the Master Emerald's card and some other cards, but the four rivals destroyed the spaceship as it took off, thus foiling Eggman Nega’s plan. With the Master Emerald back, Knuckles planned to use it to send Onyx Island back to the future where it belonged, and as well to look for the other treasures Eggman Nega had trapped in cards.

Sonic Rivals 2

In Sonic Rivals 2, Knuckles looked for the Master Emerald when it went missing again. Arriving on an island, Knuckles suspected that Dr. Eggman was behind the theft. Knuckles then met Rouge, who offered to take him to Eggman if he helped her find the Chaos Emeralds, which he agreed to. Knuckles then saw Sonic and Tails, who were also looking for Eggman and asked Sonic if he had seen Eggman. Sonic, however, insisted on getting to Eggman first, so Knuckles competed with Sonic to find Eggman.

Knuckles and the others eventually found Dr. Eggman, who was really Eggman Nega masquerading as Dr. Eggman (Knuckles does not realize this throughout the game). Knuckles demanded the Master Emerald back, but the doctor played innocent and attacked in his Egg Liner. Knuckles and Rouge then followed Eggman Nega to Sunset Forest Zone, where Rouge thought the doctor had to have an Emerald Detector to locate the Chaos Emeralds and Master Emerald, and they decided to find this device. On his own, Knuckles met Shadow who insisted on keep them from the Emeralds once he told him the story, forcing him to fight him.

Knuckles and Rouge eventually found Eggman Nega with Shadow and Metal Sonic. As Knuckles demanded Eggman's Emerald Detector, the doctor attacked in the Egg Dealer. After defeating it, Knuckles and Rouge got the Emerald Detector, which picked up a signal. As Knuckles searched the area in Neon Palace Zone, he met Silver, who wanted some Chao. After looking for Rings for the Emerald Detector, Knuckles asked Silver of why he sought Chao but thought he was crazy when he heard it was to save the world, and they ended up fighting. Later on, Knuckles and Rouge found Eggman Nega with Silver and Espio, and the doctor attacked in the Egg Dealer, but the group defeated it.

Arriving in Frontier Canyon Zone, Knuckles and Rouge lost track of Eggman Nega. The Emerald Detector soon found more Emeralds, but Knuckles was frustrated that none of them were the Master Emerald. Knuckles then saw Shadow and Metal Sonic nearby and followed them, with Knuckles chasing Metal Sonic after him after hearing Eggman's voice come from the robot. Shortly after, Knuckles met Rouge, who explained that Eggman Nega sought to bring forth the Ifrit to destroy the world. Just then, Eggman Nega attacked them in the Egg Bull, but Knuckles and Rouge defeated it despite inference from Shadow and Metal Sonic.

At Mystic Haunt Zone, Knuckles was convinced by Rouge that Eggman was here. While looking, Knuckles met Espio and asked him if he had seen Eggman or Shadow, hoping they had the Master Emerald but was dismissed. Soon after, he met and fought Metal Sonic so he could bring him to Eggman Nega. True enough, Knuckles found Eggman Nega and Shadow and demanded the Master Emerald. However, Eggman instead revealed that he used Rouge to collect the Chaos Emeralds to opening the portal to the Ifrit's world. As Silver then arrived, Knuckles had enough and fought the Egg Phantom.

After the battle, Knuckles saw that the portal to the Ifrit's dimension was opening, despite Rouge only having six Chaos Emeralds (with the seventh unknown to them being inside Metal Sonic). Intending to stop the Ifrit, Knuckles dragged Rouge with him into the Ifrit's dimension. After entering, Knuckles lost track of Rouge and began to look for her, and soon after found the Ifrit, who had taken control of Rouge. With no choice, Knuckles fought both Rouge and the Ifrit. Despite Knuckles occasionally falling prey to the creature's mind control, the two defeated the Ifrit, thus preventing it from leaving its world and got back to their home dimension before the portal closed.

After checking up on Rouge, Knuckles was annoyed the Master Emerald was still lost but then discovered that it had been inside the Emerald Detector all along. As Knuckles was praise by Rouge for his heroism, he saw Rouge leave with the Master Emerald, and he chased after her.

Sonic Colors

In the Nintendo DS version of Sonic Colors, Knuckles got a letter from supposedly Dr. Eggman which made him go to Dr. Eggman's Incredible Interstellar Amusement Park, though he eventually realized when he got there that he had been tricked.

Knuckles yelling at Orbot and Cubot in Starlight Carnival, from the Nintendo DS version of Sonic Colors.

Here, Knuckles met Orbot and Cubot and fought them, thinking they were behind the letter. However, he was distracted when he saw Sonic and Tails coming allowing Orbot and Cubot to get away. As Sonic and Tails began questioning him, Knuckles tried to cover up that he had been tricked and challenged Sonic to a mission. After he had lost, Knuckles moped over his defeat, but still denied he had been tricked. When Sonic won their competition with excellence, though, Knuckles took his loss more sportily.

Later, Knuckles met Rouge and suspected she was after the Master Emerald again. As Knuckles continued to argue with Rouge, Sonic and Tails arrived to try to break up their argument, but Knuckles stopped them while still denying that he had been tricked when Rouge brought it up. When Knuckles then noticed Rouge knew something about his letter, he learned from her that she wrote the letter, leaving him feeling very humiliated.

Sonic Generations

In the console/PC version of Sonic Generations, Knuckles attended and helped prepare Sonic's surprise birthday party. As the party began, however, the Time Eater suddenly appeared, and Knuckles was sucked into one of the Time Eater's Time Holes and ended up in White Space, where he was turned into a statue due to the Time Eater's effects.

Knuckles after returning to normal, from the console/PC version of Sonic Generations.

Eventually, Knuckles was returned to normal by Sonic and Classic Sonic. When the Sonics confronted the Time Eater, which was revealed to be controlled by Eggman and Classic Eggman, Knuckles arrived at the battle with the others and cheered on both Sonics, allowing them both to transform into Super Sonic. When the Sonics defeated the Time Eater, Knuckles and the others were sent back to the present, where Knuckles admitted to Sonic that he was not half-bad, only to be knocked into a tree by Amy for thinking so little of him. Continuing the celebration where it left off, Knuckles later waved goodbye to Classic Sonic and Classic Tails when they returned to their own world.

Sonic Lost World

In the Wii U version and PC version of Sonic Lost World, Knuckles remained behind with Amy to look after some Animals while Sonic and Tails went out to free the other animals Dr. Eggman had captured. When Amy contacted Sonic, who revealed they had only got one capsule of animals back, Knuckles boasted that he could have done better before he was pushed away.

Knuckles welcoming Sonic and Tails back, from Sonic Lost World.

When the Deadly Six took control of Eggman's Extractor and began draining the life out of earth, Knuckles observed the planet's energy being taken away. Eventually, Knuckles was drained of his energy to the point where his death seemed imminent. Fortunately, he and everyone else were saved when Sonic and Tails got the Extractor and returned the stolen energy. When Sonic and Tails returned, Knuckles boasted he would have finished it sooner, but accepted the outcome nonetheless.

Sonic Runners series

Sonic Runners

Knuckles, from Sonic Runners.

In Sonic Runners, Knuckles and his team discovered that Dr. Eggman was back to sow up chaos again. With the aid of Sonic and Tails, Knuckles spent the next period foiling Eggman and his lackeys' numerous plots, such as kidnaping Animals, hunting Wisps on Earth, harassing Chao, building new and improved Badnik armies, and attempting to procure the Master Emerald. Along the way, Knuckles also helped several local inhabitants with their issues.

While Team Sonic managed to stop Eggman every times, it all would lead to Eggman's endgame: the construction of a new Brainwashing Laser powered by the Chaos Emeralds to enslave the world with. Although Knuckles and co. secured the Emeralds, they were too late to stop Eggman from draining them of their energy. In the end, it came down to a final showdown between Team Sonic and Eggman, during which Eggman fired his Brainwashing Laser at Sonic. However, thanks to the Chaos Emeralds Sonic had, which reabsorbed their power from the laser, Sonic transformed into Super Sonic instead, and Knuckles saw him take out Eggman's laser. Reuniting with Sonic in the aftermath, Knuckles noticed Eggman had snuck away to plan his next scheme, but let that pass, knowing that they could stop whatever he could come up with, in favor of celebrating this victory with his friends.

Sonic Runners Adventure

In Sonic Runners Adventure, Knuckles tagged along on Sonic and Tails' hunt for Dr. Eggman when the scientist was stirring up trouble again. When the trio arrived in a hostile environment, Knuckles' toughness allowed him to take the lead. Discovering an Eggman facility while saving a village along the way, Tails revealed after doing some recon that the facility was an Extractor. Knuckles would thus shut it down while defeating Eggman when the doctor tried to stop him. When Eggman then made his escape, Knuckles and his team would follow him, eventually arriving in Sky Sanctuary. When Sonic was forced to let Eggman go by the doctor's Mind Control Ray though, Knuckles and Tails realized what Eggman's plan was all along: setting up a new mind control canon powered by the Extractor and Sky Sanctuary to take over the world with. Despite the opposition though, Team Sonic still managed to destroy Eggman's mind control cannon while Sonic forced Eggman to retreat.

Sonic Forces

Knuckles meets Silver on Angel Island, from Sonic Forces: Stress Test.

In Sonic Forces, Knuckles was guarding the Master Emerald on Angel Island when he got visited by Silver the Hedgehog, who Knuckles thought to be a part of a dream. He put more belief into this when he saw Angel Island become what was Pachacamac's village several years ago. The duo then met Chaos, who intimidated Silver. Knuckles tried to tell Silver that Chaos was harmless, only to get attacked by it. Knuckles and Silver then fought Chaos, until Chaos, along with the village, disappeared. Silver then explained that a catastrophic event would soon happen in Knuckles' time that would affect his future. Believing himself to be important in preventing this catastrophe, Knuckles promised to help lead a team to save the world. The duo then went off to warn the others around the world.[20]

Unfortunately, Dr. Eggman soon launched an attack on the City with his army, in which Sonic failed to prevent and was captured, seemingly leading to his demise. Due to this, Eggman soon took control over more than 99% of the world. Over the next six months, Knuckles assumed commandership over a ragtag resistance made up of his friends and allies, his flair for daring plans making him suitable for leadership, to counter Eggman's forces. However, Knuckles' army made little progress despite their efforts, and victory seemed impossible.

Knuckles eventually brought in a Resistance rookie who had survived an attack from Eggman's new henchman, Infinite in the City some time ago. After introducing the Avatar, Knuckles equipped them with a Burst Wispon. He soon after sent them on a rescue mission after Rouge revealed that Sonic was alive and was held captive onboard the newly-rebuilt Death Egg. Rouge also told Knuckles and the team that Sonic was only alive to see Eggman's empire thrive, but as the evil doctor caught wind of their rescue mission, he planned to eject Sonic into space quickly. The Avatar managed to steal a shuttle from the Spaceport and made it to the Death Egg with some other soldiers. Onboard the Death Egg however, the other soldiers got occupied by enemies, so Knuckles left Sonic's rescue to the Avatar. After the Avatar found Sonic, Knuckles expressed his relief over the radio, before ordering him and the Avatar to escape the Death Egg. Upon reuniting with the duo, Knuckles, out of necessity, sent them on a mission to shut down the Arsenal Pyramid, a weapon factory supplying Eggman's army, which he followed over the radio.

Knuckles soon after discovered that the Resistance troops in Mystic Jungle was being bombarded by the Eggman Fleet. Luckily, Sonic went there to salvage the soldiers' efforts. More trouble soon arose, however, when the Eggman Army broke through the City's defenses. Finding himself short on soldiers, Knuckles sent the Avatar to rescue the unfortunate civilians. Joining the fight, Knuckles soon learned, much to his relief, that the enemies were withdrawing, all because of the Avatar's efforts. Knuckles soon after followed the Avatar's investigation of some lifeform readings in Mystic Jungle, which led to the discovery of Tails and Classic Sonic, the latter of whom had been brought to Knuckles' dimension by Eggman's new power. Bringing the two into the Restance, Knuckles learned from Tails that Eggman had a plan that would wipe the Resistance out in three days. However, Knuckles had to put their meeting on hold when Shadow, who had seemingly defected to the Eggman Empire, attacked the Resistance's troops.

While Sonic dealt with Shadow, Knuckles learned that Eggman's HQ in Metropolis was undermanned. As such, he formulated a military action called "Operation Big Wave" to capture Metropolis with and end the war. Shortly into the attack however, Infinite, used his Phantom Ruby prototype to cast the Resistance's army into chaos. Suffering huge casualties, Knuckles and his army had no choice but to withdraw in defeat. Regrouping with his friends, Knuckles was updated on Shadow's case: according to the real Shadow, who had joined the Resistance, all the familiar faces in Eggman's Army were but Phantom Copies created by Infinite. With the Resistance now looking for a way to stop Eggman's Phantom Rubies, which had proven to be the one obstacle that keeps getting in their way, Knuckles was forced to wait while Tails and Classic Sonic investigated a lead. Eventually, the duo returned, having discovered that the Phantom Rubies needed the Death Egg to give them power, or they would be useless. As Tails presented his plan for destroying the Death Egg, Knuckles was eager to join it, but was benched by Amy so he could lead the Resistance. Knuckles would thus instruct the Avatar on how to distract the enemy when they went Guardian Rock to distract the Eggman Army. With the enemy's army occupied, Knuckles sent Sonic to Network Terminal and guided him to the Death Egg's computers. After Sonic shut down the Death Egg's defenses, Knuckles followed Classic Sonic's invasion of the Death Egg, which resulted in its destruction.

With the Phantom Rubies seemingly done for, Knuckles led another attack on Metropolis to capture Eggman. Although Knuckles' plan did not got as intended, as Eggman evaded capture and Sonic and the Avatar temporarily got banished to Null Space, he and the Resistance still managed to seize Metropolis. However, they also discovered that Eggman had prepared a backup power source for the Phantom Rubies underneath his Eggman Empire Fortress.

Knuckles inspiring his soldiers, from Sonic Forces

With less than an hour left until Eggman's endgame, Knuckles led his army on an attack on the Eggman Empire Tower, where they faced Eggman's Phantom Copy army and Infinite. There, E-123 Omega came to the rescue of Knuckles and co. when Infinite threatened to kill them. It was then that Infinite executed Eggman's endgame; using his Phantom Ruby, he created a virtual sun to drop on the Resistance. Thanks to the Avatar however, the sun was vanquished, and Knuckles rallied his army to continue the fight. Telling his army to cover his friends, Knuckles stayed behind while Sonic and the Avatar destroyed Infinite. When Classic Sonic then found a way into the Phantom Rubies' reactor, Knuckles sent Sonic and the Avatar, who destroyed the reactor. Thanks to Eggman and his Phantom Ruby-empowered Death Egg Robot however, thousands of Phantom Copies appeared, threatening to overwhelm the Resistance. Fortunately, Sonic, the Avatar and Classic Sonic beat Eggman's robot, which made his Phantom Copy army vanish and left the Resistance as the victors.

In the aftermath, Knuckles bid farewell to Classic Sonic, whose return to his dimension was imminent with the Phantom Ruby now gone. Knuckles then followed Sonic's example and set out to clean up the mess Eggman had left the world in. A while later, Knuckles disbanded the Resistance, which had served its purpose. However, Silver reminded him that they still had a lot to do. With the Avatar taking their leave too, Knuckles, although surprised, bid them farewell and praised their efforts. Knuckles and his friends then agreed with Tails that even though they would go back to their old lives, they would keep working together to restore the world.

Team Sonic Racing

In Team Sonic Racing, Knuckles and his team received vaguely worded invitations to the "Ultimate Test of Racing Skill." With their curiosity getting the better of them, Team Sonic made a beeline for the rendezvous, where they ran into Team Rose. Soon after, a stranger approached, a Tanuki calling himself Dodon Pa. Introducing himself as the one who sent the invitation, Dodon Pa told Team Sonic that they would be racing as a team in the most advanced cars he could create in a Grand Prix that would test their limits. While Dodon Pa's vagueness rose suspicion among Knuckles and the others, Sonic convinced his team to join the Grand Prix. As Team Sonic got ready to depart for the first race on Planet Wisp, Team Rose ended up coming along and joining the competition.

Knuckles having suspicions about Dodon Pa's Grand Prix, from Team Sonic Racing.

For the races, Knuckles received the Land Breaker to race in. Knuckles soon after got more hyped up about the Grand Prix after learning that the winners got to keep their cars. After a couple of races though, Knuckles began to wonder what was compelling Dodon Pa to make them compete. Not long after, Team Vector joined the Grand Prix. Meeting Silver, Knuckles learned that Silver had received an invitation to the Grand Prix as well. Seeing that Dodon Pa had managed to sent a message to the future, Knuckles realized that their enigmatic host was dangerously powerful. A few races later, Knuckles caught Tails talking with Vector. Tails tried to cover up his discussion, but Knuckles did not buy it. In addition, Knuckles realized something was up with Vector, since he was not here with his usualy crew. In the end, Knuckles told Sonic that Tails was being sneaky. Not long after, Dr. Eggman and his team joined the competition, along with Team Dark.

During a race between Team Sonic and Team Dark, Knuckles talked strategy with Tails while contending with Omega. Knuckles soon after rammed Rouge's racecar from behind as payback, only to trigger a Skim Boost between her and Omega that sent Rouge flying ahead. Soon after, Dr. Eggman intruded on the teams' race in order to compete against them on his own as a "special guest" (which Dodon Pa permitted despite knowing it was a lie). After Eggman began gaining the lead, Knuckles and his team were convinced by Rouge to put their feud aside and work together with Team Dark to beat Eggman. Following Tails' plan, Knuckles helped Sonic get past Eggman together with Shadow with a Slingshot move. Although Knuckles worried that the two teams would not be enough to stop Eggman, Tails said he had a plan. Knuckles thus covered for Tails while he got Team Rose and Team Vector to join the teams on the racetrack. Together, the racers surrounded Eggman on the racetrack before delivering a massive beatdown on the doctor with their combined Wisp power-ups. However, Dodon Pa was too busy watching Eggman's beating to see who crossed the finish line first.[21]

Later, Knuckles learned from Omochao that Dodon Pa was sending information on the teams' teamwork out to an unknown receiver. Believing the receiver to be Eggman, Knuckles was tempted to bail on the Grand Prix. When BIg later alone insisted that Dodon Pa was a nice guy, a frustrated Knuckles tried to convince Big otherwise until Big brought up a point that made them all realize that Dodon Pa could be a good guy after all. Later, when Zavok joined Eggman's team, Knuckles wanted them to make their move, but the others reminded him that they had no moves yet and that they did not know for sure who the bad guy was; all they could do for now was keep racing. Eventually though, Knuckles had enough, and confronted Dodon Pa in order to get some answers. It was then that Vector revealed to Knuckles and everyone else that Dodon Pa was actually the king of a planet and the President of Donpa Motors. Soon after, Dodon Pa revealed that he was using the Grand Prix to gather information for his corporation's Ultimate Energy Engine, which Dodon Pa wanted to use for philanthropic purposes.

Soon after, the heroes learned from Big that Eggman had kidnapped Dodon Pa and brought him to the Final Fortress. Wanting to rescue Dodon Pa, Knuckles and co. went to the Final Fortress. There, Eggman had them compete in a number of races with Team Eggman and his army of Eggpawns in exchange for Dodon Pa, not knowing Eggman was using them to gather the Ultimate Team Energy needed to finish the Ultimate Energy Engine. Once the engine was complete, Eggman stole it from Dodon Pa and incorporated it into his Death Egg. Knuckles and his crew subsequently faced the Death Egg, and beat it. However, the Death Egg soon after went crazy and drove into the Final Fortress's core. As the Final Fortress crashed, Sonic had his friends abandon their cars and evacuate, with the exception of Knuckles and Tails who decided to remain with Sonic and help him save Dodon Pa. Having convinced Sonic to let them help him, Knuckles and Team Sonic saved Dodon Pa and reunited with the others down on the ground. Just as the Grand Prix seemed over since the cars had been destroyed when the Final Fortress crashed, Dodon Pa decided to give everyone new cars, thus allowing Knuckles and his friends to race once more.

Other game appearances

Sonic the Hedgehog 2

Knuckles does not actually appear in the original version of Sonic the Hedgehog 2, but he does appear in the 2013 remaster of the game as a playable character. He also appears in the good ending if the player collects all seven Chaos Emeralds, where he is seen hiding in the bushes as Dr. Eggman is throwing a temper tantrum at his defeat in the end screen similar to his appearance on the cover of Sonic the Hedgehog 3.

The title screen of Knuckles the Echidna in Sonic the Hedgehog 2.

Locking Sonic the Hedgehog 2 onto Sonic & Knuckles will unlock Knuckles the Echidna in Sonic the Hedgehog 2, an alternate version of Sonic the Hedgehog 2 where Knuckles is the main character; It is also included in most re-releases of the original game. In this version, Knuckles has all his skills from Sonic & Knuckles, including his climbing and gliding maneuvers. This allows him to reach previously unknown areas, although his low Spin Jump makes it difficult to reach otherwise regular sections in the Acts. Sonic and Tails are not playable, having been removed, and there's no two-player mode. Several Monitor power-up items such as Super Rings and 1-Ups have been placed in previously unreachable places for Knuckles to discover. The player can also turn into Super Knuckles as well, being easier to obtain than Super Sonic as Knuckles doesn't lose his Rings upon exiting a Special Stage.

Sonic Drift 2

Knuckles and his Tempest, from Sonic Drift 2.

In Sonic Drift 2, Knuckles is one of the seven playable characters in the game. His vehicle in this title is a yellow Hummer H1 called the Tempest.

In gameplay, Knuckles' strength is handling and his weakness is high speed; an all-round solid racer, Knuckles possesses good cornering, medium acceleration and decent speed. On the race track, Knuckles has two special abilities (something only he has among the playable characters). The first ability is the "Punch", which lets him hit any nearby racers, causing them to drop a Ring, and grind them to a complete stop. If none are in the vicinity, he can use the "Jump", an ability similar to that of Tails' that lets him literally send his car flying into the air (like when hitting a Spring or using a Jump) for about five seconds.

Sonic the Hedgehog (1991)

With the lock on-technology provided by Sonic & Knuckles, Sega had originally planned to replace Sonic with Knuckles as the protagonist in the original 1991 title, Sonic the Hedgehog, similar to how he was added as a playable character using this method in Sonic the Hedgehog 2 and 3, though this idea was ultimately abandoned in favor of the Blue Sphere. The reason for this is that Knuckles' palette conflicted with that of Sonic, causing technical problems.

However, in the 2013 remaster of the game, Knuckles was included as an unlockable character (alongside Tails). As with Knuckles the Echidna in Sonic the Hedgehog 2 and Sonic the Hedgehog 3 & Knuckles, his special abilities remain the same, being able to glide and climb, although his jump height is still reduced.

Monitor power-ups such as Shields and Invincible have been added for both Tails (who is now able to fly) and Knuckles to discover, in places which otherwise cannot be reached normally as Sonic.

Knuckles' Chaotix

Knuckles and Espio seeing Robotnik escape, from Knuckles' Chaotix.

In Knuckles' Chaotix, a few months after Sonic & Knuckles, Knuckles noticed a new island had risen from the southern ocean as a result of tectonic activity simulated by the Master Emerald's presence when Angel Island sank into the sea and was now rapidly flourishing due to the Master Emerald's pillar. Curious, Knuckles speculated it held the remains of the Knuckles Clan and that something there was amplifying the power of the Master Emerald's pillar. Duty-bound, Knuckles left to investigate the island.[22] When he got there, Knuckles noticed that it had been converted into the Newtrogic High Zone by Dr. Robotnik who sought to synthesize Dark Rings to help him steal the Master Emerald. Knuckles soon found Robotnik and made him to flee with Metal Sonic as he was trapping Espio the Chameleon in his Combi Catcher. Knuckles then freed Espio, and they teamed up to free Robotnik's other captives and thwart the doctor's plans.

Knuckles and Mighty facing their final foe, from Knuckles' Chaotix.

Together, Knuckles and Espio freed the captive Vector the Crocodile, Charmy Bee and Mighty the Armadillo, who also joined them. After that, Knuckles and his crew began securing the prestigious Chaos Rings while stopping Robotnik's usage of his Dark Rings on several occasions. When the time came for the final showdown, the Chaotix was attacked by Metal Sonic. During the ensuing battle, Knuckles and co. fell into another room where they were attacked by Metal Sonic Kai, Robotnik's final trump card. Regardless, Knuckles and the Chaotix still defeated him, thus restoring peace to the island.

Sonic Storybook Series

Sonic and the Secret Rings

In Sonic and the Secret Rings, Knuckles appears as a playable character in Party Mode. He is available from the beginning of the game.

Sonic and the Black Knight

In Sonic and the Black Knight, Knuckles appears as a playable character in Battle Mode. He can be unlocked in Battle Mode by clearing the "Defeat the Boss: Sir Gawain" mission in Titanic Plain. In gameplay, he has the same moveset as Sir Gawain, Knuckles' alternate reality doppelganger from the world of Camelot. He also wields the twin-swords Galatine during battle and his Soul Surge is Gail Meteor.

Mario & Sonic series

Mario & Sonic at the Olympic Games

Knuckles is an echidna that shows exceptional versatility despite his overall strength in Power events. He'll perform best at events like throwing and rowing, but can also provide solid competition in many other competitions that aren't as power-based.

Knuckles the Echidna's profile, Mario & Sonic at the Olympic Games website

In both the Wii version and Nintendo DS version of Mario & Sonic at the Olympic Games, Knuckles appears as one of the playable characters.

In both versions of the game, Knuckles has the following characteristics and icons:

Icon Skill Type Stats Emblem
Knuckles icon (Mario & Sonic 2008).png Power Knuckles-Stats.png MyS emblem Knuckles.png

In the Mission Mode in both versions of the game, Knuckles has to beat a set of five missions, which will unlock a final mission. Clearing all six missions will award the player with the Knuckles Emblem. These missions include:

  • Wii:
    1. Javelin Throw: Throw the specified distance! - Throw the javelin between 40 and 50m within three tries.
    2. Individual epée: Win after parrying! - Win after parrying your opponent's attacks 5 times!
    3. Skeet: Shoot the fast targets! - Shoot down 2 or more targets that are flying at high speed!
    4. 400m: Beat your rival! - Finish before Vector! (Your overall place doesn't matter.)
    5. Singles: Beat your rival! - Defeat Blaze!
    6. Dream Fencing: Beat your rival! - Defeat Dr. Eggman!
  • Nintendo DS:
    1. Hammer Throw - Throw 3 times, increasing your distance each time!
    2. 400m - Finish in 2nd place!
    3. 10m Platform - Perform GREAT or PERFECT in all aspects of the event!
    4. Table Tennis - Perform 5 successful smashes and win!
    5. Dream Basketball - Perform 1 combo within 30 seconds!
    6. Dream Boxing - Beat Wario when he's in top condition!

In both versions of the game, the player can also earn the Knuckles Crown by getting all gold and 1st medals using Knuckles.

Mario & Sonic at the Olympic Winter Games

Knuckles the Echidna has been friend and foe to Sonic for years. He has protected the Master Emerald on Angel Island, but now has his eye on a new prize: being #1 in the Olympic Winter Games! Powerful and determined, Knuckles will be going for gold with his Screw Driver ability on the Wii and DS, and Spiral Uppercut ability on the DS.

Knuckles the Echidna's profile, Mario & Sonic at the Olympic Winter Games website

In both the Wii version and Nintendo DS version of Mario & Sonic at the Olympic Winter Games, Knuckles appears as a playable character. Knuckles also has the special skill, Screw Driver, which he can use in certain events to gain speed.

In both versions of the game, Knuckles has the following characteristics and icons:

Icon Skill Type Stats Special Skill Flag
Wii DS
KnucklesMASATOWG.png Power Knuckles-Wii-Stats.png Knuckles-DS-Stats.png Knuckles flag.jpg

In the Wii version of the game, a Mii costume based on Knuckles can be unlocked in the game after winning five gold or/and 1st place medals in any Olympic/Dream Events with Knuckles and then buying the costume in the boutique.

Knuckles smashing the ice wall in Polastraits, from the Nintendo DS version of Mario & Sonic at the Olympic Winter Games.

In Adventure Tours mode in the Nintendo DS version of the game, Knuckles appears as one of the unlockable characters who can take part in the mode's sports events. He can be found in Frostown where he must be beaten in a Biathlon event. After that, Knuckles will join the player's team. Later in Polastraits, Knuckles helps Cream open a chest that contains the Fighter's Stick, which is needed for future events. However, only after Knuckles clears the Luge event presented to him by Cream can the player obtain the Fighter's Stick. Afterward, in Cubyrinth, Knuckles pulls a lever whose functions the cast does not know, causing everyone to fall down from Cubyrinth to Polastraits. There, the cast is trapped in an unknown area, but Knuckles can crack the large piece of ice obscuring the way as a part of the "Break the Ice!" mini-game. Here, Knuckles has to break down an ice wall blocking a passage in less that 45 seconds. Clearing the mini-game will unlock the passage in the overworld.

Mario & Sonic at the London 2012 Olympic Games

Knuckles is an echidna that shows exceptional versatility despite his overall strength in Power events. He'll perform best at events like throwing and rowing, but can also provide solid competition in many other competitions that aren't as power-based.

Knuckles the Echidna's profile, Mario & Sonic at the London 2012 Olympic Games, website

In both the Wii version and Nintendo 3DS version of Mario & Sonic at the London 2012 Olympic Games, Knuckles appears as one of the playable characters. In the Wii version, Knuckles also has the special skill, Screw Driver, which he can use in certain events to gain speed.

In this game, across both versions, Knuckles has the following characteristics and icons:

Icon Skill Type Stats (Wii) Class (3DS) Special Skill Flag
KnucklesMASATOWG.png Power Captur21e.PNG Wild Ones Screw Driver Knuckles flag.jpg

In the Wii version of the game, Knuckles also appears as an interactable character in London Party. Here, the player can speak to him in order to play minigames and earn stickers. Also, a Mii costume based on Knuckles can be unlocked in the game by either winning it through a Scratch Card or paying ten blank cards.

Knuckles after destroying a Fog Machine, from the Nintendo 3DS version of Mario & Sonic at the London 2012 Olympic Games.

In the Nintendo 3DS version of the game, Knuckles belongs to the Wild Ones class and can only take part in selected sports events for this class. In the game's story mode, Knuckles and Vector were summoned by Espio and Charmy, who were actually a Dry Bones and a Lakitu in disguises that a Magikoopa had put on them, before the Olympic Games. As a result, Knuckles and Vector were lured into a sports hall, where the Magikoopa stunned them by summoning a Chain Chomp and Piranha Plant. The heroes were then forced to take part in sporting events against Bowser, whom they lost to due to still being in bad shape from the earlier attack. However, when they fully recovered, they failed to catch Bowser because his minions stopped them. When the Phantasmal Fog later covered London, Knuckles and Vector caught up with Bowser and challenged him to an event when he tried to fight Sonic. After defeating Bowser, Knuckles destroyed one of the Fog Machines, thus clearing the Horse Guards Parade of the fog. Knuckles and Vector would then keep watch over Bowser. However, when Knuckles tried to hit him, it turned out that this Bowser was but a three-dimensional hologram. Sometime after, the fog returned to London, but more intense than before. However, Knuckles and Vector, with the help of Donkey Kong, managed to clear the Horse Guards Parade of the fog, which was later reported to Sonic and Mario as their way of supporting the duo during their final showdown with Dr. Eggman and Bowser. Knuckles was later present at the opening ceremony of the Olympic Games.

In the Nintendo 3DS version of the game, a badge of Knuckles can also be obtained from the badge machine.

Mario & Sonic at the Sochi 2014 Olympic Winter Games

In Mario & Sonic at the Sochi 2014 Olympic Winter Games, Knuckles appears as one of the playable characters. In this game, Knuckles has the special skill, Screw Driver, which he can use in certain events to gain speed.

In this game, Knuckles has the following characteristics and icons:

Icon Skill Type Special Skill Biography Flag
KnucklesMASATOWG.png Power Screw Driver Guardian of the Master Emerald, this echidna packs a real punch. His sizeable strength means he's always a contender. Knuckles flag.jpg

In Legends Showdown, Knuckles is on the second team, along with Amy, Wario and Waluigi. Also, a Mii costume based on Knuckles can be unlocked in the game by playing an event one hundred times.

Mario & Sonic at the Rio 2016 Olympic Games

In the Wii U version, Nintendo 3DS version, and arcade version ofMario & Sonic at the Rio 2016 Olympic Games, Knuckles appears as a playable character.

In the Wii U version of the game, Knuckles is available from the beginning and playable in all events. Also, Mii costume set based on Knuckles can be unlocked in the game by completing Knuckles' Carnival Challenge. However, it must be collected in two separate parts, each with their own stat changes.

In the Wii U version of the game, Knuckles has the following characteristics, description and icons:

Icon Skill Type Stats Playable Event(s) Biography Flag
Power Speed Technique
Knuckles icon (Mario & Sonic 2016).png Power 8 4.5 5.5 All events A red echidna that boasts some serious muscle, Knuckles is what one might call "best frenemies" with Sonic. He's a capable treasure hunter, but his straightforward and trusting nature gets him mixed up with less-scrupulous characters on occasion. He's eager to test his formidable agility and prodigious strength to the fullest in the Olympic Games. Mario Sonic Rio Knuckles Flag.png

In the Nintendo 3DS version of the game, Knuckles is available from the beginning and has the following characteristics:

Artwork Stats Playable Event(s) Challenged in Road to Rio?
Knuckles Lost World.png Rio2016Stats3DSKnuckles.png
  • Javelin Throw
  • Boxing
Sonic's Story Day 6 (Semifinals)

In the arcade edition of the game, Knuckles is available from the beginning and has the following characteristics:

Icon Skill Type Stats Recommended Event(s)
Power Speed Technique
KnucklesMASATOWG.png Power 9 6 3
  • Hammer Throw
  • Javelin Throw

Mario & Sonic at the Olympic Games Tokyo 2020

In both the Nintendo Switch version and arcade version of Mario & Sonic at the Olympic Games Tokyo 2020, Knuckles appears as a playable character.

Knuckles and Shadow talking with Tails and Luigi, from Mario & Sonic at the Olympic Games Tokyo 2020

In the Nintendo Switch version of the game, Knuckles appears as one of the characters in the story mode. In this mode, Knuckles and Shadow came across Tails and Luigi, who were looking for a way to charge an object called the Excitement Battery with the cheer of the Olympic Games' audience so that they could save Sonic, Mario, Dr. Eggman, Bowser and Toad, who were suck inside a dying gaming system. To help excite the audience and produce enough cheers, Knuckles and Shadow went up against Princess Peach and Yoshi is a Badminton court event, which they lost. Afterward, Knuckles and Shadow joined Tails and Luigi's team on their mission. Knuckles also advised the team to seek out Jet for further help. When they found Jet in the Olympic Stadium, Knuckles would face Jet in an event and beat him, thereby creating more cheer and charge for the Excitement Battery. After everyone had gotten out of the gaming system, the Olympics were ready to commence.

In the Nintendo Switch version of the game, Knuckles is playable in both the 2020 and the 1964 events, the latter in which Knuckles possesses his sprite-based appearance from Sonic the Hedgehog 3, and has the following characteristics:

Artwork Skill Type Biography Wears unique clothing
between events?
Knuckles Tokyo.png Power A powerful echidna who lives on Angel Island as the lone guardian of the Master Emerald.

In the arcade version of the game, Knuckles is playable in both the 2020 and the 1964 events, the latter in which Knuckles also possesses his sprite-based appearance from Sonic the Hedgehog 3, and has the following characteristics and icons:

Icon Skill Type Stats Wears unique clothing
between events?
Power Speed Technique
Knuckles icon (Mario & Sonic 2016).png Power 9 6 3

Sega All-Stars series

Sega Superstars Tennis

In Sega Superstars Tennis, Knuckles makes a cameo appearance in the Green Hill court.

Sonic & Sega All-Stars Racing

Knuckles and his vehicle, from Sonic & Sega All-Stars Racing.

In Sonic & Sega All-Stars Racing, Knuckles appears as a playable character. On the console versions, the player needs to pay 7,500 SEGA Miles to unlock Knuckles, and on the Nintendo DS and iOS versions, the player can unlock him with 500,000 SEGA miles. For the racing in this game, he is driving a red quad bike named the Land Breaker.

In gameplay, Knuckles has high maneuverability and acceleration, but low speed and turbo-boost. His All-Star Move, "Emerald Power", allows Knuckles to glide above the track and unleash an earthquake that stuns all opponents. On the DS and iOS versions however, his attack is short-range only.

Sonic & All-Stars Racing Transformed

In Sonic & All-Stars Racing Transformed, Knuckles once again appears as a playable character. In this game, he is available from the beginning. For the racing in this game, he is driving a backwards trike designed after himself in a gliding stance, which can transform into a boat, a plane, or a car, depending on the surrounding terrain. It is implied that Knuckles entered the race because Sonic and Tails invited him.[23]

In gameplay, Knuckles has above-average speed, acceleration, handling and boost. His All-Star Move lets him use the Master Emerald to create green energy blasts (similar to the Chaos Blast) that can attack surrounding racers.

Super Smash Bros. series

Super Smash Bros. Brawl

Knuckles makes a cameo appearance in Super Smash Bros. Brawl in the unlockable Green Hill Zone stage where he, Tails, and Silver run through the shuttle loop in the background. He also appears as a trophy and a sticker:

ID Name Image Description Acquisition
243 538 Knuckles Knuckles Trophy.jpg A powerful red echidna also known by his full name, Knuckles the Echidna. Knuckles resides on Angel Island, where he guards the Master Emerald. Both friend and rival of Sonic, Knuckles is a martial-arts expert who can break through rocks with his spiked fists. In addition, he can climb walls and use the wind to glide through the air. Random
Image Name Page ID Area of Effect Effect User
Brawl Sticker Knuckles The Echidna (Sonic The Hedgehog 3).png
Knuckles The Echidna (Sonic the Hedgehog 3) Knuckles the Echidna (Sonic the Hedgehog 3) 273 680 Electric Resistance +23 Sonic

Super Smash Bros. for Nintendo 3DS and Wii U

Knuckles makes a cameo appearance in Super Smash Bros. for Nintendo 3DS and Wii U in the unlockable Green Hill Zone stage where he, Tails, and Silver run through the shuttle loop in the background. Both versions of the game also include a downloadable Knuckles costume exclusive to Mii Brawlers.

Knuckles also appears as a trophy in both versions of the game:

Wii U Trophy
Name Picture Category Trophy Box Description Acquisition
Knuckles Knuckles the Echidna
Knuckles trophy pose (Super Smash Bros. Wii U).png
Series Related 83: Sonic & Friends Knuckles the Echidna is the dedicated guardian of the Master Emerald, rarely leaving his post on the floating Angel Island. His serious, one-track-minded approach puts him at odds with his rival, Sonic, but the two somehow manage to be friends all the same. Random
Nintendo 3DS Trophy
Name Picture Category Description Acquisition
Knuckles Knuckles the Echidna
Stage Knuckles the Echidna is the dedicated guardian of the Master Emerald, rarely leaving his post on the floating Angel Island. His serious, one-track-minded approach puts him at odds with his rival, Sonic, but the two somehow manage to be friends all the same. Random

Super Smash Bros. Ultimate

In Super Smash Bros. Ultimate, Knuckles appears as an Assist Trophy.[24] He will attack opponents using the Homing Attack, punch them or dig underground and use a powerful uppercut when summoned. Knuckles also makes a cameo appearance in Green Hill Zone. Knuckles is also once again available as a downloadable costume for the Mii Brawler, which was released as DLC on 16 April 2019. Compared to the previous installment, the size of the Mii Brawler costume's gloves have been reduced. In addition, Knuckles makes another appearance as a Primary Spirit with the following characteristics:

Image Stat statistics Spirit Battle
Base Max Enemy Fighter(s) Enemy Power Stage Battle conditions
SF STEAM MANUAL EN LRv5-9.png Power: 2,778
Attack: 1,443
Defense: 1,229
Power: 8,360
Attack: 4,341
Defense: 3,698
Name Type Class Music Acquisition
Knuckles Grab ★★★ (Ace) N/A Summon with cores from Gordo, Muddy Mole, and any Grab-type core
No. Slots Ability
781 2 Fist Attack ↑

Sonic Chronicles: The Dark Brotherhood

At the beginning of Sonic Chronicles: The Dark Brotherhood, Knuckles, Sonic, Tails, and Amy faced Dr. Eggman on the Egg Carrier, and successfully made the flying vessel crash into Metropolis while Eggman was presumed dead in the crash.

Some time later, Knuckles learned that six of the Chaos Emeralds had been stolen by a group dubbed the Marauders. Intending to stop them, Knuckles came to Tails and had him set up a trap for the Marauders by using the last Chaos Emerald. When the Marauders appeared, however, they jammed the trap and turned on Knuckles who was overwhelmed by numbers and defeated by their leader, Shade the Echidna, for then to be taken with them as they escaped with the Chaos Emerald.

Knuckles talking about his duty to protect the Master Emerald, from Sonic Chronicles: The Dark Brotherhood.

Locked up in their hideout, Knuckles attempted to break out, when he met Sonic, Tails and their friends, who had come to rescue him. When Knuckles decided to head back to Angel Island to protect the Master Emerald from the Marauders, they discovered that the island was gone. Suspecting that Eggman was working with the Marauders, the group began looking for the doctor using Tails' Eggman Detector. With a Pattern Generator made from Eggman Devices they found, the team located Eggman. However, the doctor claimed that he was against the Marauders as well and that he had also been reformed, willing to help Knuckles and the others fight the Marauders by leading them into Metropolis where the Marauders had drawn Angel Island to with the Chaos Emeralds, which they accepted.

On their way there, Knuckles and the others met Shade and her lackeys, and Knuckles discovered that Shade and the Marauders were a group of echidnas called the Nocturnus Clan, exiled to the Twilight Cage in ancient times. After defeating them, Shade blocked their way to Metropolis, but Knuckles and the others found a way around it. Meanwhile, Knuckles was torn to finally meet others of his kind but was forced to fight them. Regardless, Knuckles was joined by Sonic and his party when he went to Angel Island to secure the Master Emerald, while Tails and Eggman made a weapon against the Nocturnus Clan.

By hijacking an airship and with some help from Tails' team, Sonic and his group got to Angel Island where they met the Nocturnus Clan’s leader, Imperator Ix, who sought to rule the world. Ix unleashed his soldiers on them, but Knuckles and Sonic held them off until Tails and Eggman came and deployed their weapon, which dispatched the soldiers. United, the team fought Ix until the techno wizard blew him and the others away, even Shade, but Knuckles saved Shade. Ix then stole the Master Emerald and used it to create a wormhole into Knuckles' dimension so that the Nocturnus Clan could conquer it, while Angel Island fell from the sky. The team then came up with the plan of going after Ix into the Twilight Cage and reclaim the Emeralds, and Shade joined Sonic's team to stop Ix's plan, having realized the evil nature of her leader.

Having constructed the Blue Cyclone, Knuckles and the group entered the Twilight Cage, while Eggman stayed behind. Inside the Twilight Cage, Knuckles and his team got five of the Chaos Emeralds back and got the alliance of the alien races residing there. When they planned to invade Nocturne to get the last Emeralds, Knuckles remained reluctant to fight Ix and instead hoped to return the echidnas to Earth peacefully so that he would not be alone anymore. With the assistance of the alien races, Knuckles and the others got to Nocturne. Once there, Knuckles got the team split into two, with him and Shade leading their group and Sonic and Tails leading the other, to find the last two Chaos Emeralds, which Charyb and Scylla possessed. Knuckles, meanwhile, planned to redeem Ix before Sonic could get to him.

Soon after, Knuckles and his team were almost defeated by Gizoid Centurions but were saved by Sonic and Tails. Knuckles and his team then found and defeated Scylla and got his Chaos Emerald, before helping Sonic's group defeat Charyb. Afterward, Knuckles and his team were teleported to Ix, who tried to persuade Knuckles to join him. Realizing Ix was unredeemable, Knuckles declined and stood by his duty while vowing to help the Nocturnus Clan his way before fighting Ix. Sonic then arrived and ensured the defeat of Ix while Knuckles reclaimed the Master Emerald. With his final defeat, Ix started to close the wormhole out of the Twilight Cage, but Knuckles and the others got through it just in time. When they returned home, however, Knuckles and the others saw that much time had passed, thus allowing Eggman to rebuild his forces, which they faced upon exit from the Twilight Cage.

Sonic Dash

In Sonic Dash, Knuckles makes an appearance as a playable character. In this game, he can only be unlocked by completing Seaside Hill Zone.

Image Affinity Bonus Upgrade Profile
Power-Up Highest level
Sonic Dash Rocky.png Dash Boost 9
x2 Multiplier 10
Magnet 9
Shield 11
Headstart 9

On 14 August 2020, Knuckles was rereleased as Treasure Hunter Knuckles.

Image Unlock Requirement Upgrade Profile
Power-Up Highest level
Sonic Dash - Treasure Hunter Knuckles.png
Collect 500 Treasure Hunter Knuckles tokens
(14 August 2020 - 21 August 2020)
Dash Boost 9
x2 Multiplier 10
Magnet 11
Shield 11
Headstart 9

Sonic Jump Fever

In Sonic Jump Fever, Knuckles appears as a playable character. In this game, he can be unlocked after either collecting fifty Knuckles Character Tokens or paying 750 Red Star Rings for him. In gameplay, Knuckles' powerful Double Jump allows him to ascend rapidly and smash through rebound platforms and rock falls. The power-ups he can utilize in this game include the Stun, Spring Shoes, Magnet and Detonate.

Knuckles also appears on the game's preset leaderboards, placing third in each Zone. When playing a Zone, a destructible monitor containing Knuckles' portrait will appear if his score has been passed.

Sonic Forces: Speed Battle

In Sonic Forces: Speed Battle, Knuckles appears as a playable character. He has the following characteristics in gameplay:

Image Rarity Stats Items
Projectile Boost Trap

Speed: 7/10

Acceleration: 4/10

Strength: 9/10

Explosive Mine

On 7 October 2020, Knuckles was re-released as Treasure Hunter Knuckles, a variant character of Knuckles dressed in his treasure hunter ensemble from Sonic Dash, as a part of the version 3.0.0 update. This character has the following gameplay characteristics:

Image Rarity Stats Items
Projectile Boost Trap
Treasure Hunter Knuckles.png

Speed: 10/10

Acceleration: 4/10

Strength: 9/10

Gold Rush
Rocky Road

Sonic Racing

In Sonic Racing, Knuckles is a playable character. He is available from the beginning of the game.

Image Vehicle Skill Bio
Sonic Racing Knuckles.png Land Breaker Boost Pad Charge Last descendant of the Knuckles Clan and protector of the Master Emerald.

Sonic Speed Simulator

In Sonic Speed Simulator, Knuckles appears as of the playable characters for the player to choose from. In order to unlock Knuckles, the player must find his mission card in Emerald Hill and then select him in the options menu. In this game, Knuckles is controlled in the same way as the other characters in the game. He has also the Spin Dash, Spin Jump, Spin Dash Charge, and Homing Attack in his moveset. His speed depends on the player's current level.

Treasure Hunter Knuckles, from Sonic Speed Simulator.

On 21 May 2022, Knuckles was re-released as "Treasure Hunter Knuckles", a variant character of Knuckles dressed in his treasure hunter ensemble from Sonic Dash. In order to unlock Treasure Hunter Knuckles, the player has to complete all the objectives during the "Treasure Hunt Event", which means collecting one million Rings, three thousand Master Emerald Shards, and thirty hidden Eggman Keys. Alternatively, the player can purchase him for 499 Robux during the same event.


  1. 1.0 1.1 1.2 1.3 1.4 Sonic Channel (Japanese). Characters: Knuckles. Sega. Archived from the original on 26 May 2019. Retrieved on 3 July 2015.
  2. 2.0 2.1 2.2 2.3 Sonic Team (31 July 1997). Sonic Jam. Sega Saturn. Sega. Area/Level: Sonic World, Museum. "Knuckles the Echidna profile."
  3. 3.0 3.1 Sega of America . Knuckles the Echidna. Sonic Characters. Sega. Archived from the original on 5 March 2005. Retrieved on 26 October 2017. "Knuckles was born alone on Angel Island, brought into this world to defend the Master Emerald. That is Knuckles' destiny and fate. If Sonic exemplifies the wind, then Knuckles is the mountain: stern and unmovable. Knuckles is quick to anger, but cool and determined in battle. Even though he considers Sonic his friend, the disposition of the Master Emerald is his ultimate concern. His determination to protect the gem from harm or ill use is set in stone and is unshakable. He is often envious of the adventurous lifestyle Sonic lives and the fame that has followed from Sonic's deeds, but Knuckles is well known in his own right, as a treasure hunter versed in the martial arts."
  4. 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Sonic the Hedgehog 3 (Sega Mega Drive) Japanese instruction booklet, pgs. 34-36.
  5. Sonic the Hedgehog 3 (Sega Genesis) United States instruction booklet, pg. 6.
  6. 6.0 6.1 6.2 Devra Newberger Speregen (2016). Sonic: The Ultimate Character Guide. Scholastic. p. 15. ISBN 978-1338033243.
  7. Sonic & Knuckles (Sega Genesis) United States instruction booklet, pg. 7.
  8. 8.0 8.1 8.2 Sega . ソニック & ナックルズ (Japanese). Sonic Channel. Archived from the original on 20 January 2021. Retrieved on 27 January 2021.
  9. Sonic Team (23 December 1998). Sonic Adventure. Dreamcast. Sega. Cutscene: Cutscene 14 (Knuckles' story). "Knuckles: I'll probably be on this floating island forever. Guarding the Master Emerald, again. I may not know the whole story behind this. But perhaps it's better that way. I'm at peace one more."
  10. 10.0 10.1 10.2 10.3 Sonic The Hedgehog 4. Sega. Archived from the original on 12 May 2013. Retrieved on 27 October 2017.
  11. Sonic the Hedgehog Triple Trouble (Sega Game Gear) Japanese instruction booklet, pg. 29.
  12. Sonic the Hedgehog Triple Trouble introduction sequence.
  13. Sonic & Tails 2 (Sega Game Gear) Japanese instruction booklet, pgs. 4-6.
  14. "Sonic the Fighters" (in Japanese). Gamest. June 1996. Archived from the original. Retrieved on 15 July 2018.
  15. Sonic 3D: FLickies' Island (Sega Saturn) Japanese instruction booklet, pgs. 4-6.
  16. G Sonic (Sega Game Gear) Japanese instruction booklet, pgs. 4-7.
  17. G Sonic (Sega Game Gear) Japanese instruction booklet, pg. 9.
  18. Sonic R (Sega Saturn) Japanese instruction booklet, pgs. 4-5.
  19. Sonic Riders: Zero Gravity (Wii) English instruction booklet.
  20. Sonic Forces: Stress Test, "Stress Test"
  21. Team Sonic Racing One-shot, "Team Sonic Racing"
  22. Chaotix (Super 32X) Japanese instruction booklet, pgs. 4-5.
  23. Sega . Sonic & All-Stars Racing Transformed Official website (Japanese). Characters: Knuckles. Sega. Retrieved on 29 July 2015.
  24. 38: Sonic – Super Smash Bros. Ultimate. YouTube. Super Smash Bros. (12 June 2018). Retrieved on 13 June 2018.