Sonic Wiki Zone

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 Wiki Zone
Sonic Wiki Zone
This is a Sonic Wiki Zone Featured Article

Angel Island. A land of miracles. Of mysteries. My home. I am its guardian. I watch over the Master Emerald and every living thing here. That is to say, all plants and animals. Any other kind of civilization is long since disappeared from the island. I do things on my own and that's just how I like it. I don't need anyone else to get by. But sometimes... I wonder how things would be if I hadn't been given this responsibility. Why was I chosen for this duty? Perhaps it's karma...

— Knuckles the Echidna, Sonic Frontiers Prologue: Divergence

Knuckles the Echidna (ナックルズ・ザ・エキドゥナ Nakkuruzu za Ekiduna?) is a character in the Sonic the Hedgehog series. He is an anthropomorphic echidna and the current guardian of the Master Emerald, a powerful ancient gemstone which is kept on Angel Island. Guarding it is his solemn duty to protect from anyone seeking to abuse it, as well as the sole surviving descendant of the echidna race from the Knuckles Clan.[8][10][11][12] Known for his powerful and wild nature,[8] his dominant traits are his super strength and the two spike-like knuckles on each of his gloves, from which his name is derived from, and which he can dig and climb walls with. He can also trap the wind under his dreadlocks to glide through the air. Knuckles is also one of Sonic the Hedgehog's oldest friends and rivals.

A loner by nature, Knuckles is independent, headstrong, and serious, yet gullible and short-tempered to a fault. He is entirely devoted to his duty, spending most of his time on Angel Island protecting the Master Emerald,[12] and rarely cares about anything that is of no importance. When his friends and others are in need of his help, however, Knuckles can always be relied on, being willing to leave his home very often.[12]

Though usually depicted as the guardian of the Master Emerald, he was originally described as the guardian of Angel Island's seven Chaos Emeralds.[13]

Quick Answers

What is Knuckles the Echidna's role in the Sonic the Hedgehog series? toggle section
Knuckles the Echidna is the current guardian of the Master Emerald and the sole surviving descendant of the echidna race from the Knuckles Clan. He is known for his powerful and wild nature, super strength, and ability to dig and climb walls with his spike-like knuckles. He is also one of Sonic the Hedgehog's oldest friends and rivals.
Provided by: Fandom
What is Knuckles the Echidna's personality like? toggle section
Knuckles the Echidna is independent, headstrong, and a loner by nature. He is also dedicated to protecting the Master Emerald and dislikes being tricked or betrayed. He enjoys peace and quiet, hanging out with his friends, and treasure hunting.
Provided by: Fandom
What does Knuckles the Echidna dislike? toggle section
Knuckles the Echidna dislikes strong sunshine, big cities, being tricked or betrayed, fighting or hurting innocent people, Dr. Eggman and his robots, anyone who comes after the Master Emerald, being thought of as weak, crookedness, and failing to protect the Master Emerald. He also dislikes Rouge messing with him.
Provided by: Fandom
What is Knuckles the Echidna's attire? toggle section
Knuckles the Echidna wears white gloves with pointed knuckles and red and yellow shoes with green cuffs and metal plates.
Provided by: Fandom
What is Knuckles the Echidna's fur color? toggle section
Knuckles the Echidna has red and white fur.
Provided by: Fandom

Concept and creation[]


Knuckles' original design.

Knuckles was created and designed by Takashi Yuda. During the conception of Sonic the Hedgehog 3, the development team wanted to create a new rival for Sonic.[14] The final design of Knuckles was the result of dozens of possible designs inspired by numerous different animals and usage of the market research about American kids’ taste.[15][14][16] There were eight different candidates with the most popular one being Knuckles with his dreadlocks. One design even planned Knuckles to be more “reptilian”, like a dinosaur due to the popularity of Jurassic Park at the time.[17][18] Knuckles' long tail in the final design is stated to be a remnant from his early, more dinosaur-looking design.[17][15] When it came to Knuckles' primary color, red and green were proposed candidates among the staff, while Yuji Naka was pushing towards purple. However, after conducting research on American children, it was revealed that red was overwhelmingly popular, thus being chosen for the character's color.[19] The emphasis of the character was to break walls.[20]

Character designer Takashi Yuda never intended him to be any more than a "supporting character."[21] Knuckles was introduced in Sonic the Hedgehog 3 as an "intimidator" because of his powerful abilities.[22] He was given a headlining role in the next game, Sonic & Knuckles.[23]


Knuckles is an anthropomorphic echidna with red fur that covers most of his body, a black nose on his peach-skinned muzzle, a white crescent-shaped patch of fur on his chest, and amethyst eyes. He also has seven dreadlock-like spines around the sides and back of his head and a medium-sized, tri-crooked tail. For attire, Knuckles wears red and yellow shoes with green cuffs, light gray soles, and metallic, sextuple-bolted plates on top. He also wears large, white, mitten-like gloves with sock-like cuffs and two pointy, spiked knuckles on each hand.

In his younger years, Knuckles had black eyes, a more protruding chest, more defined cheekbones, and was shorter in height, but he has since grown out of these traits.

In the Sonic Riders series, Knuckles wears purple and light gray goggles with dark gray straps around his neck, and high-top tennis shoes similar to his standard shoes. He also wears a version of his standard gloves that possess visible lining with a dark gray band around each wrist.

During the Mirage Express incident, Knuckles wore a brown cowboy hat that had a black band with three Rings, a matching brown vest that had a black circle with a gold sheriff's star on it, and a yellow neckerchief.



Knuckles' profile, from Sonic Jam.

Knuckles is independent, wild,[24][25][26] hot-blooded,[27] tough,[24][25][26] and a loner by nature. If Sonic embodies the wind that keeps blowing forward, then the echidna personifies the immobility of a mountain.[1][28] Due to having lived in seclusion for most of his life, Knuckles is a rather antisocial and reclusive individual. As such, he cares very little about what others think, which makes him bluntly honest, straightforward, and somewhat egotistical.[24]

Knuckles is fiercely loyal to Angel Island and does whatever is in his power to protect it. He prefers to stay close to the Master Emerald's shrine to keep a watchful eye over everything at his home. Despite this devotion, the echidna is willing to leave his duty whenever his help is needed.[12] Though he has found other lifestyles appealing, and may even dream of a free one like Sonic's own,[24] he will never trade away his duties as he is far too devoted to his role as guardian, looking very concerned whenever he leaves the Master Emerald behind and spending too much time protecting the giant gem alone.[29] When not performing his duties, Knuckles prefers spending his time practicing his fighting skills, going treasure hunting, or hanging out with his friends.

Knuckles is usually solemn, stoic, and collected, and usually likes to be by himself. As stubborn as he is tough,[26] he is as well headstrong and inflexible,[24] preferring to do things his way, which causes him to clash with others. Regardless, he is very strong-willed, seldom wavering in his determination, and will not give up on his goals once he has set them. While he is cool and determined in battle, the echidna has an extremely short and wild temper and is hard to reason with when he is angry,[30] which has more than once gotten him into trouble.

Knuckles profile SG

Knuckles' profile, from the Xbox 360 version of Sonic Generations.

Despite being a silent loner, Knuckles is a heroic, brave, kind-hearted, and selfless soul. While unwilling to forgive evil people,[27] he will risk his own life to save anyone or get them out of trouble and shows empathy for others. He is likewise a loyal and caring friend, who is always willing to help his friends out in tight situations and will do anything to protect them. When not angered, the echidna is pretty laid-back and never cracks under pressure. He can also be very understanding of the sly and does not take kindly to people who disrespect or hurt his friends, or innocents, in any way.

Having been living much of his life in isolation, Knuckles grew up believing in honesty and holds a firm and steadfast belief that there is good in everyone, which always lets him give people second chances. Because of his lack of social ingenuity, however, it makes him very naive, incredibly gullible, fast about forgiving people, and easily misled, which has given him a history of being tricked by Dr. Eggman. This has made the echidna aggressive and suspicious towards anyone he deems questionable. Over time, however, Knuckles has gotten better about this and is more suspicious concerning the doctor's trickery. Once he finds out he has been tricked, he can get quite angered, but quickly regains enough of his composure to start working towards a resolution immediately.

Though not dull-witted, Knuckles is often prone to rash and ill-advised actions. While not above picking complex strategies, he often chooses force to be the solution, pushing himself through obstacles while focusing on his goal and ignoring other factors along the way. Similarly, he can also be quite reckless when panicking about the Master Emerald, such being especially evident during the Space Colony ARK incident, where he ended up fighting Sonic for the controls of the space shuttle and causing it to crash land as well as abandoning his allies out of a panic due to the Master Emerald shards being lost to space from a collision with a meteor forcing the cargo bay to open. When in his right element, however, Knuckles can be quite clever, sharp-witted, and sneaky, such as setting several successful traps for Sonic and Tails on Angel Island when they first arrived. He is also capable of learning from his mistakes. Knuckles has also proven himself to have a high degree of leadership skills, most noticeably during his time as the commander of the Resistance. He is noted to be very charismatic with inspirational speeches, and he has a flair of daring plans that provided the Resistance with a much-needed offensive during the War to Take Back the Planet. However, for all his skills as a leader, Knuckles is still easily distracted and prefers to be out on the battlefield rather than in the command center. While he would never admit it, Knuckles has become a bit envious of the lifestyle that Sonic has, being able to live carefree without anything holding him in one place. Even so, Knuckles would never trade away his duties to live Sonic's life, far too devoted to his role as guardian.

Knuckles is said to be shy around women.[31] Also, due to his secluded lifestyle on Angel Island, Knuckles feels very uncomfortable in industrialized or crowded cities and places,[32][33] especially if they do not have any vegetation[34] or are littered with bright lights.[35]

Knuckles seems to have lightened up on later adventures, such as the Time Eater incident and the War to Take Back the Planet. While he still sometimes displays a brooding, headstrong, and stubborn attitude, he is shown to be better at acknowledging his shortcomings and displays more personal restraint and better social interaction.

IDW Publishing[]


Knuckles the Echidna, from Sonic the Hedgehog #3.

Knuckles is a tough and headstrong echidna. Serious, unconcerned with nonsense, and stubborn, he has no patience for stationary work and prefers to be where the action is, unless the safety of the Master Emerald is at stake. Despite this, he is still an overall nice person in normal conversations.[36]Knuckles prefers solitude. He is likewise fiercely defensive and loyal to his homeland and prefers to stay there.[36] Because of this, he refuses to let anyone else protect it, determined to do his job alone.[37][38] As such, when anything bad befalls the island and its Master Emerald, Knuckles takes it very personally and blames himself for not being able to prevent it. He will also not allow himself to rest or take it easy until he is sure that his island and its treasure are safe once more.[39] He also does not like having visitors on his island unless there is a crisis that require Angel Island. As soon as the crisis is over, however, he wants to see his island abandoned by the visitors as soon as possible.[40][41] Despite his ties to his home however, Knuckles is very heroic and is willing to leave his duty whenever his help is needed in order to aid his friends as well as the innocent. As such, he has been known to open his island to the needy and defend those instead of the Master Emerald, just like he promised Espio during the Zombot apocalypse. He is also ready to make sacrifices for the good of all, as seen when he let himself get infected by the Metal Virus in order to keep a Zombot Shadow at bay.[42]

Powers and abilities[]

Being the guardian of the Master Emerald, Knuckles is a very powerful, seasoned warrior. Said to be an unstoppable power in fights,[27] he is capable of taking on even the most powerful of opponents without rest. He has even been able to fight figures like Sonic, Rouge, Shadow, Silver, and Metal Sonic to a standstill.

Heroes VolcanicDunk

Knuckles punching the ground with enough force to trigger an eruption, from Sonic Heroes.

Knuckles' trademark ability is his indomitable strength. Possessing lots of power,[43] he is strong enough to pulverize massive boulders,[10][1][44] punch through solid steel,[10] and lift objects several times his size and weight with ease.[10] By comparison, Knuckles' strength is stated to equal Sonic's speed;[10] considering the hedgehog's measured footspeed, which is known to surpass Mach 1, it would mean that Knuckles is capable of lifting over 100 metric tons.[note 1] This makes the echidna one of the physically strongest characters in the series.[10] His strength seems to lie in his upper body, particularly in his arms and fists, the former of which boasting enormous strength[45] and latter being as hard as rocks.[46] Another testament to Knuckles' strength is that by just punching the ground, he can create fissures, widespread tremors, and even powerful volcanic eruptions.[47] Additionally, he can punch with his fists or throw objects through the air with such force that they ignite from friction. He can even launch punches with such force that they create explosions of enormous power.[48] Despite his main strength lying in his upper body, however, Knuckles' legs are quite powerful too, as he can jump several stories into the air from a standstill position.[49]

KMPlayer 2016-07-12 23-14-39-288

Knuckles running at speeds comparable to Sonic and Tails, from Sonic Heroes.

Knuckles is able to run at breakneck speeds that almost match Sonic's,[50] who can reach supersonic running speeds. He is even able to run fast enough to create afterimages of himself and scale vertical surfaces and ceilings. Even so, he is not quite as fast as Sonic at his maximum speed, as Knuckles is noted to run fairly slow by comparison. Knuckles is also fast enough to execute rapid punches in quick succession within a split-second,[51] although he has been noted to have slow movements in combat.[43]

Knuckles possesses near-maximized physical durability. Testaments to this include him surviving a bomb exploding right in front of him through sheer toughness,[52][53] and him going through atmospheric entry and then landing on the ground unharmed.[54] In addition, despite the force of the impacts his fists receive when punching at high forces, Knuckles is never phased by the recoil, regardless of what he hits or how hard he is hitting. Knuckles is also shown to have sharp reflexes and acrobatic skills, enough to let him do special tricks and movements while in mid-air, pull off various Spin Attack maneuvers at high speed, and grind along rails just as fast as Sonic while doing tricks and evading obstacles.[44]

Chara06 01

Knuckles gliding, from Sonic the Hedgehog (2006).

Unlike Sonic, Knuckles is a good swimmer, being able to swim into incredible depths and with both great speed and skill. Thanks to the spikes on his fists, he is also a skilled burrower,[11] being able to dig like a gopher[10] into any wall or floor and tunnel through subterranean regions at great speed.[55] These spikes also make him a skilled climber,[11] as they allow him to plant his fists into any surface and scale them. In addition, the echidna is an expert at gliding,[56] which he can easily do by using his dreadlocks.[10][11]

Knuckles possesses the uncanny ability to sense energy, specifically the one produced by the Chaos Emeralds and the Master Emerald or similar ones, such as those contained in the Sol Emeralds.[57][58][59][60] and can track down their "signals" like an Emerald Detector. Like Sonic and Shadow, Knuckles can also harness the power of the Chaos Emeralds to empower himself. As its guardian, Knuckles is also the only person alive who knows how to control the Master Emerald,[1] which allows him to utilize the jewel's different powers or tap into its vast energies to empower himself. Other more mystical abilities Knuckles has exhibited include summoning lightning bolts, harnessing earth elementals to heal himself,[61] and using the supernatural power of the earth to make rocks fall from the sky.[62]

Knuckles is also able to perform the Spin Attack, a technique where he curls into a concussive ball or cutting disk and directs himself at his targets. With it, Knuckles can shred or burrow through just about any substance given enough speed. Adept in its usage, Knuckles can utilize several variants of the Spin Attack for both ground- and aerial maneuvers, including the Spin Dash, Spin Jump, and Homing Attack.

Rivals 2 Load screen 04 (no text) - Attack

Knuckles fighting Sonic, from Sonic Rivals 2.

Even without his Spin Attack, Knuckles is a skilled hand-to-hand combatant. A master in a number of martial arts[24] focusing on hand-to-hand combat, Knuckles makes use of his powerful fists to take on his foes, with his specialty lying in punching moves where he uses his spiked fists for devastating blows. In terms of fighting style, Knuckles focuses on power, using straight, repetitive and forceful punches, such as power-packed jabs or piercing uppercuts to deal critical blows to his opponents. For stronger strikes, Knuckles tends to build up momentum with his fists by swinging them around, before hitting his opponent in full force. By taking advantage of his burrowing abilities, Knuckles can even hide underground before hitting opponents with an uppercut from below when his opponent least expects it. Despite being a powerhouse, however, most of Knuckles' fighting moves are slow and easy to read.[43]

SFProlouge 56

Knuckles climbing a wall and searching in Sonic Frontiers Prologue: Divergence.

Knuckles is an expert treasure hunter and can be considered one of the best in the world, if not the best.[63] Also, while not highly intelligent, Knuckles is well-versed in ancient cultures, ruins, and legends, such as when he was able to translate the ancient Babylonian texts at Gigan Rocks during the MeteorTech incident.

Knuckles is also a skilled Extreme Gear rider, having proven himself a worthy competitor against many of the world's best Extreme Gear riders. To best put his skills in perspective, Knuckles was able to beat Storm the Albatross in a race, who is regarded as a "wind master". When riding his Extreme Gear, Knuckles can bash his way through obstacles effortlessly and engage in close combat with his fellow racers without losing control. With his Extreme Gear, Knuckles can even enhance his physical abilities.[64]

When it comes down to it, Knuckles is also shown to have semi-competent leadership skills. During the War to Take Back the Planet, he was able to lead the Resistance for several months against the Eggman Empire and even come up with war strategies of his own.

As seen during Dodon Pa's Grand Prix, Knuckles has excellent skills when it comes to driving and racing in racecars like the Land Breaker. Along those lines, Knuckles has also demonstrated some rudimentary piloting knowledge of more advanced crafts, having once piloted the Egg Saucer,[65] and a Space Shuttle from Eggman's base to the Space Colony ARK (albeit in a more dangerous manner for half the journey due to panic over losing his Emerald Shards).[66]


Although he prefers to let his fists do the talking, Knuckles has wielded a number of tools during his adventures, albeit never permanently. During the Emerl incident for example, he made use of deployable landmines, and amidst the Gemerl incident, he would wield his own version of the Piko Piko Hammer.

IDW Publishing[]

Knuckles possesses incredible strength, being as strong as Sonic is fast; with a single punch, he is able to pierce thick metal with ease or knock a person into the ground.[67][68] Thanks to his experience, he is able to make good use of this skill. By stretching his arms and legs outwards while airborne. By stretching his arms and legs outwards while airborne, Knuckles can also catch the air under his dreadlocks to ride on air, allowing him to glide through mid-air. Also, by using the spikes on his fists, Knuckles can deal extra damage to his targets and scale any kind of surface with ease. He is also a great hand-to-hand combatant.[36][69]

Being the guardian of the Master Emerald, Knuckles possesses a special link to the massive gem. This link allows him to detect the energies and will of the Master Emerald, although this link can be disturbed.[70][39]


Super Knuckles[]

Main article: Super Knuckles

Super Knuckles, from Sonic Heroes.

With the seven Chaos Emeralds, Knuckles is able to attain a Super State known as Super Knuckles. In this state, all of Knuckles' abilities far surpass his normal ones. In addition, he is able to fly and is virtually invulnerable. However, this transformation consumes a lot of energy and requires Rings to be maintained.

Hyper Knuckles[]

Main article: Hyper Knuckles
Hyper Knuckles animated

Hyper Knuckles, from Sonic 3 & Knuckles.

In Sonic 3 & Knuckles, Knuckles can transform into an extended version of Super Knuckles, called Hyper Knuckles, with the seven Super Emeralds. This form basically shares the same abilities and powers as Super Knuckles but on an even higher level.

Color Powers[]

Main article: Color Power

By harnessing different variants of Hyper-go-on from Wisps, Knuckles can use specific Color Powers to transform into a certain form, such as a drill, a laser, or even a planet, each one possessing its own unique abilities. So far, Knuckles has been able to transform into the Cyan Laser, Yellow Drill, and Indigo Asteroid. However, these transformations require a steady supply of Hyper-go-on to be maintained.


Knuckles is stubborn and short-tempered,[2] yet he can be easily fooled.

He is shy around the girls.[71]

Knuckles suffers from phasmophobia (fear of ghosts), as he was scared of King Boom Boo during the Space Colony ARK incident, though evidently not to any debilitating extent, as he was perfectly capable of engaging in combat with the latter after only a brief spell of unease.


Sonic the Hedgehog[]


Knuckles and Sonic, from Sonic Adventure.

Oh. No thanks.
Tails: ...uh..wh-?
I don't want to talk about Sonic. Is that all? How do I turn this thing off-

— Knuckles the Echidna and Miles "Tails" Prower, "TailsTube #3 (feat. Knuckles)"

Sonic the Hedgehog is Knuckles' rival and best friend.[72] While they have known each other for a long time, their relationship is somewhat complicated, the two of them having been summed up as "best frenemies."[73] When the echidna first met the hedgehog, the two had the worst kind of encounter,[28] with the former trying to keep the latter from stopping the Death Egg's re-launch after Dr. Robotnik had deceived him into thinking that Sonic was a thief seeking the Master Emerald. As such, they started off as adversaries. However, when Knuckles discovered that the doctor had tricked him, he joined forces with the hedgehog to stop his nemesis. Afterward, they parted ways on good terms.

Sonic Colours DS Knuckles challenges Sonic

Knuckles challenging Sonic to a race, from the Nintendo DS version of Sonic Colors.

Because of their first impressions of each other and their personalities and competing feelings, Knuckles and Sonic were not initially "good friends" to begin with.[28][8] In fact, they are much like oil and water. While the echidna exemplifies the mountain and is stern, serious, and unmovable, the hedgehog exemplifies the wind and is laid-back, cool, and free.[28][4] As such, they tend to argue a lot. They likewise share a competitive rivalry with each other and it usually comes to blows when they clash, although their confrontations have become less serious in recent times, and are now more of a form of slapstick between the two.[28] In fact, the more they fight, the better they get along.[74] With Knuckles' strength matching Sonic's speed perfectly, their battles are anything from climactic to just plain funny.

Knuckles sees himself as Sonic's rival, though it has been implied it is because he envies the hedgehog's free lifestyle and self-reliant nature.[24][4] Being as egotistical as he is as well, the echidna sees himself as Sonic's better, as seen during the Lost Hex incident where he claimed more than once that he could do better than his friend on his adventure. Also, because of his short temper, Knuckles usually falls for the hedgehog's teasing and provocations directed at him, which causes him to lose his cool and get angry at him.[12] This tends to make him seek outright brawls with Sonic to put him in his place,[28] and not wanting to talk about him at all.[12] The hedgehog also manages to find a way to get Knuckles involved in his skirmishes very often, which the echidna finds very annoying. Nevertheless, he is willing to admit that one rarely gets bored with Sonic.[29]

Due to his lack of social abilities in the past, Knuckles used to fall for the deceit of Dr. Robotnik, later known as "Eggman", very often, which, in turn, would be the cause of most of his confrontations with Sonic, although as time passed, he has generally become more aware of the doctor's plans and has stopped believing his claims regarding the hedgehog. When the echidna discovers he has been deceived by Eggman though, he usually tries to hide his embarrassment from Sonic,[75] who in turn tends to chide him by calling him "Knucklehead", a nickname that does not sit well with Knuckles.[76]

In contrast to their differences, after having been on several adventures together, Knuckles and Sonic's relationship has improved, with the former seeing him more and more as his friend. Likewise, they have always rushed to each other's aid when they are in a pinch.[28] The two of them are connected by a hot-blooded friendship[77] and while they still argue and complain about each other from time to time, they are perfectly synchronized in the heat of action.[28] Details aside, they also have a connection that lets them understand what is really important without saying anything to each other. In fact, when it all comes down to it, Knuckles can be considered Sonic's best friend next to Tails. It can even be argued that the two of them are as close to each other as Sonic and Tails are, as the nature of their rivalry/quarreling friendship lets them have a relationship that does not require any hesitation.[28] Also, according to Tails, Sonic and Knuckles are "funny" together.[78]

Sonic Frontiers Sonic and Knuckles

Knuckles and Sonic sharing a fist bump, from Sonic Frontiers.

While Knuckles is impressed by Sonic's skills on some level, respects him, and believes him to be a "good guy" and his friend,[79][4][8] he prefers not to admit it when he needs his help; as seen during the Time Eater incident, after the hedgehog restored the echidna from a lifeless state, the latter thanked him for his help before quickly stating that he did not need it.[80] At the end of the same incident, Knuckles also begrudgingly admitted that Sonic was not "half-bad" after defeating the Time Eater, showcasing a reluctance to admit how well Sonic does. Despite it all though, the echidna and the hedgehog deeply acknowledge each other.[77] The two are also great and loyal teammates. In addition to Knuckles being a vital part of Sonic's team, the two of them have been called "Fighting Buddies" on one occasion. Noticeably, when they do manage to work together, they form an unstoppable team. Additionally, the echidna is always happy to help out the hedgehog if it means scrambling Eggman's plans for world domination.[81]

Sonic and Knuckles Mocking Rough and Tumble

Knuckles and Sonic mock Rough and Tumble, from Sonic the Hedgehog #3.

I can count on you to cause trouble. I can count on Tails to keep you on target.

— Knuckles the Echidna, Sonic the Hedgehog Free Comic Book Day 2022

Sonic the Hedgehog is both a close friend and rival to Knuckles, with the two of them being no stranger to butting heads over a disagreement at worst, or partaking in banter with each other at best. Due to their rivalry, they tend to occasionally try and outdo each other.[82]

Knuckles' seriousness often contrasts Sonic's carefreeness, but that does not stop them from being a tight-knit team in a fight. Furthermore, the two of them put a lot of trust in one another's abilities and work near perfectly to get the job done.[36] Knuckles in particular holds a high opinion about Sonic's ability to resolve any crisis, but he also blames him for bringing trouble to his island every time they meet.[40][41]

Miles "Tails" Prower[]

Screenshot 20171107-132303

Knuckles and Tails, from Sonic Heroes.

Heh. You've been hanging out with Sonic too much, you're starting to sound like him.

— Knuckles the Echidna, "TailsTube #3 (feat. Knuckles)"

Miles "Tails" Prower is a close friend of Knuckles. Although they do not seem to have much of a relationship in the earlier games, when they first met, Knuckles and Tails were enemies, as Dr. Robotnik had tricked the echidna into believing Tails and Sonic were intruders seeking the Master Emerald for evil purposes, though they become friends when Knuckles discovers that Robotnik had lied to him.

Knuckles shows a more amicable attitude towards Tails, particularly compared to his interactions with Sonic and others, although the fox may occasionally irritate the echidna with his technobabble.[83] Additionally, by the time of Starfall Islands incident, Tails' manners had begun to imitate Sonic's due to having spent so much time with him, much to Knuckles' displeasure.[12] However, the echidna seems to enjoy teasing his friend from time to time, such as when he scared him with the idea that Team Sonic had fought with Shadow's ghost just before entering Hang Castle during the Neo Metal Sonic incident.[84] Nevertheless, the echidna does care about Tails, attempting (with little success) to defend him from Wave's taunts during the first EX World Grand Prix.[85]

Amy Rose[]

Amy & Knuckles (Sonic Generations)

Amy and Knuckles cheering Sonic, from the console/PC version of Sonic Generations.

Hold up Amy. We’re all happy Sonic is alive! But he won’t be for long if he doesn’t get off that Egg in a hurry.

— Knuckles the Echidna, Sonic Forces

Amy Rose has only been seen interacting with Knuckles on very rare occasions, although they seem to have an awkward, yet at the same time, friendly relationship. During the War to Take Back the Planet, they were teammates as part of the Resistance. Although they got along well, Amy had to keep Knuckles in check at times. Amy also knocked Knuckles into a tree at the end of the Time Eater incident when talking about how good both Sonics did at stopping both Eggman. Despite them not always in agreement, Amy does care about him and his wellbeing.

Knuckles and Amy

Knuckles and Amy, from Sonic the Hedgehog #62.

Amy Rose is a good friend of Knuckles, as the two having known each other for a long time. They both played vital roles in the Resistance during the War to Take Back the Planet, with Knuckles as the commander and Amy as the lead organizer.[86] When Neo Metal Sonic took over Angel Island, Amy was quick to show concern and comfort Knuckles during his fit of anger, assuring him that she and the others would help him liberate the island.[70][39] When Amy later visited Angel Island to return a relic that she found in the possession of Rouge, Knuckles was extremely grateful and offered Amy to join him in returning the relic to its proper location, much to her excitement.[87]

Amy has a high level of respect for Knuckles' strong commitment to his duty, understanding that a location as precious as Angel Island should be protected, and is shown being impressed at the ease with which Knuckles navigates the island.[87]

Dr. Eggman[]

Screenshot 201711

Knuckles being deceived by Dr. Robotnik, from Sonic Adventure DX: Director's Cut.

Good! 'Cause I won't let you lay a finger on the Master Emerald. It's my duty to protect it as the last Echidna!

— Knuckles the Echidna, The Final Horizon

Dr. Eggman is Knuckles' worst enemy. They first met during the Angel Island incident, where the doctor, at the time carrying the name "Dr. Robotnik", tricked the echidna into believing that Sonic and Tails were thieves trying to steal the Chaos Emeralds. At the last second, however, Knuckles could see through the villain's lie and joined the hedgehog's side to stop him. In the later crises that arose though, the echidna, due to his gullible nature, was still occasionally manipulated by the scientist in his favor, which made him feel very embarrassed when Sonic found out about it.

More recently, Knuckles has shown a very hostile and rough attitude towards Eggman, and is more wary of his deceit; during the MeteorTech incident, he had a complete refusal at first to believe any words that came from the doctor's mouth concerning the global MeteorTech rampage. Soon after, he was even willing to physically threaten Eggman to extract information or when he seemed to have sprung a trap.[88]

Shadow the Hedgehog[]

Knuckles and Shadow the Hedgehog do not have much interaction with each other, but when they do, they are either allies or rivals. They started off as indirect enemies during the Space Colony ARK incident because Shadow impersonated Sonic and had him thrown in jail at Prison Island as well as being associated with his own arch-rival, Rouge. Toward the end of the game, they became allies when they had to save the planet from the Space Colony ARK.

The first real fight between them happened during the Neo Metal Sonic incident, when Team Dark provoked Team Sonic into battling them, although Shadow did not remember Knuckles and his teammates. After the fight, Knuckles jokingly mentioned that they might have fought Shadow's ghost and scared Tails.

In Shadow the Hedgehog Knuckles appears in Glyphic Canyon, Central City, and Black Comet stages asking for Shadow's help in Hero missions.

During the Solaris incident, he and Shadow were loosely allies, and they worked together again for a time in order to return to the present and save all of reality from Solaris in the end.

Shadow and Knuckles appear to have some bitter resentment towards each other as seen in Sonic Rivals when Shadow bluntly pointed out that Knuckles was useless for his shortcomings while retaining an indifferent attitude towards his challenges, whilst Knuckles, briefly trying to be cordial, was irritated by Shadow's haughty presence. In Sonic Rivals 2, Shadow is willing to hinder Knuckles' search for the Master Emerald to keep him from getting the Chaos Emerald while indecisively refusing to explain his motives, even starting a fight with him, ultimately leading Knuckles to mistakenly assume he was involved in the Master Emerald's disappearance. Knuckles seems to find Shadow and his smug demeanor annoying, and it is likely that Shadow's inflated ego tends to rub Knuckles the wrong way, and examples of this is seen in Sonic Free Riders when Knuckles pointed out that Shadow had a big ego in a rather annoyed tone after Team Dark beat Team Babylon and remarked to Tails he and Rouge weren't ones for team loyalty as they showed no compassion for E-10000B. Even so, Knuckles possesses respect for Shadow, cheering him in his fight against Devil Doom in Shadow the Hedgehog. In Sonic Forces, Knuckles was shocked to hear about Shadow causing trouble in Sunset Heights, wondering why he would "work for the enemy". As it turned out that the real Shadow was not working with Eggman, Knuckles fought alongside him in the penultimate battle against the Eggman Empire as an ally. Overall, Knuckles and Shadow's relationship revolves around their goals.

Rouge the Bat[]

Sonic2app 2016-08-28 14-04-34-992

Knuckles saving Rouge, from Sonic Adventure 2.

Rouge the Bat is Knuckles' primary rival. Knuckles and Rouge have been fighting over the Master Emerald since the they first met. Rouge was designed to be Knuckles' compatibility just like how Shadow was designed to be Sonic's compatibility when it comes to basic rivalry and skills.

During the Space Colony ARK incident, they became enemies when they met because Rouge had stolen the Master Emerald from him and was later working with Shadow and Eggman. Also, Knuckles purposely shatters the Master Emerald to save it from Dr. Eggman. Knuckles and Rouge both go looking for its pieces. Eventually, Knuckles has to hunt Rouge down for the remaining pieces, and the two have their final confrontation at the level, Meteor Herd. But at a standstill, he saves her life instead after she slips on a narrow beam and was about to fall into a burning pit of lava. After the rescue, Rouge and Knuckles share a long moment gazing at each other, before Rouge snatches her hand away and retorts with ungratefulness and teasing. In the end, Rouge gives him the remaining pieces of the Master Emerald and stubbornly complains that "they stink like echidnas do!". Knuckles gathers the shards to complete the Emerald and glances over to her, muttering "I'm sorry if I hurt you..." and runs off. Before the scene fades out, Rouge gives a thoughtful smile over her shoulder before exiting.

In Sonic Heroes, at the end of Team Dark's story, Rouge commented that she would go look for the Master Emerald, "since that irritating echidna is here." However, in the last scene, she went to Knuckles and coquettishly hinted about going to look for someone else's treasure. Knuckles smiles and says, "She never gives up, does she?"

During the Solaris incident, Rouge and Knuckles were bitter allies during their mission to travel back to the present day but joined up with him to collect the seven Chaos Emeralds to bring Sonic back to life.

During the Ifrit incident, the two teamed up. Rouge's reason for this is because she had a mysterious client who told her that if she found all the Emeralds, she would be rewarded. She teamed up with Knuckles in search of the identity of her client. They fight the Ifrit to get back to normal depending on which side you play. Knuckles also asked Rouge if she was alright when they won against the Ifrit, showing his concern for her, and the only reason why he fights her in the last level is because she's struggling to break free from mind control.

During the Wisp incident, Knuckles explains to Rouge that he is at Starlight Carnival because he received an invitation from Dr. Eggman but proving that he did not get tricked. Rouge tells him that the invitation was written by her, causing Knuckles to burst into anger.

During the Time Eater incident, Knuckles and Rouge oddly seem to be friendly to each other at Sonic's birthday party, as they are seen setting the table, eating, smiling, and talking to each other. They are also friendly with each other in Sonic Forces, and Rouge holds no qualms with being a spy under Knuckles' command, even acknowledging him as "boss".

In Team Sonic Racing, in Dodon Pa's Grand Prix, Knuckles, and Rouge's rivalry is shown most friendly. Despite the instance of him ramming her in a race between their teams[89], they are able to be amiable with Rouge throwing some playful banter. Despite their improving interactions, Knuckles is still wary of Rouge due to her lingering interest in the Master Emerald, becoming defensive when she is even brought up[12].

Rouge Dalliance Knuckles

Rouge dalliance Knuckles, from Sonic the Hedgehog #30.

Knuckles and Rouge can get along well, but the former usually is annoyed by the bat's antics and obsession with the Master Emerald. Rouge has teased Knuckles with this several times, but he has not responded very positively to it. While Knuckles tolerates her presence on his island when needed, he has limited patience when it comes to Rouge. In addition, Rouge has been known to jokingly flirt with Knuckles, which flusters him.[40][41]

Vector the Crocodile[]

Knuckles and Vector the Crocodile are on good terms with each other, having been friends since the Chaos Ring incident. However, they do not interact often with one another in the present day. Regardless, Vector gave advice to Knuckles when Team Sonic was fighting Metal Overlord, apparently acknowledging his great power.[90]

In Sonic Free Riders, the two did not have a friendly relationship, as Knuckles felt underwhelmed having to race against Vector and the rest of Team Rose, treating them like a joke as he was irritated by their loud behavior. Although Vector managed to defeat Knuckles one time, the echidna still said he would not get far with brute force, enraging the crocodile.

In Sonic Forces, the two were comrades in the game, and they appeared to work very well together, as Vector was a high-ranking member of the Resistance. The two also appeared to have considerable respect for each other, and Vector unsurprisingly appreciated Knuckles for his aggressive (yet sometimes short-sighted) generalship[91] considering Vector's own liking of non-peaceful methods.

Espio the Chameleon[]

Knuckles has known Espio the Chameleon for a good while and are close allies in time of need. They both have a mutual trusting relationship. They are not immune to minor conflicts at times, as Knuckles mentions that Espio once spread through reading a book to him very quickly, also spoiling the ending for him, much to Knuckles' dismay.

Blaze the Cat[]

Knuckles first met Blaze the Cat when Cream wanted Blaze to be friends with him. Knuckles was initially very friendly and cordial towards Blaze before he noticed Blaze holding a few Sol Emeralds, which he mistook for Chaos Emeralds. He, therefore, gave Blaze advice to give them to Sonic. Blaze got angry at Knuckles and told him that she did not have any Chaos Emeralds. Knuckles then got angry at her and accused her of lying, and then made an attempt to attack her. Blaze dodged Knuckles' attack and knocked him out, leaving him to lie in a crevice. When Knuckles regained consciousness, he developed a loathing towards Blaze and wanted revenge. When they met once again, Knuckles nearly started a fight with Blaze, but he was stopped by Amy. Cream also convinced Blaze that Knuckles was actually a "nice guy", which made Blaze feel relieved. Soon, Knuckles let go of his grudge and befriended Blaze.

Bark the Polar Bear[]

C'mon Bark! I know you can fight! That's more like it!

Knuckles the Echidna, Sonic the Hedgehog 30th Anniversary Special

Knuckles first met Bark the Polar Bear during the Death Egg II incident, Knuckles after that considers Bark one of his rivals but not a friendly one either. Knuckles will even tease his ability to beat him in a fight which would give Bark the consent that he is weak, but him and Knuckles are not buddies nor friends ither.

Storm the Albatross[]

Knuckles and Storm (Sonic Free Riders Opening)

Knuckles and Storm, from Sonic Free Riders.

When Knuckles and Storm the Albatross met, Knuckles punched Storm really hard while the latter was trying to commit a theft, which caused Storm to fall from his Extreme Gear. Ever since then, the two have been rivals over who is the stronger man. When Storm lost against Knuckles in the World Grand Prix, he falsely accused him of having cheated. During the MeteorTech incident, the two also showed a spark of anger when they saw each other again. In this encounter, Knuckles thought of Storm as a "meathead" while Storm wanted to settle the score between them, causing great tension between the two.

Silver the Hedgehog[]

Knuckles and Silver the Hedgehog appear to have a friendly relationship with a small rivalry between the two. Although they do not have much interaction with each other, they have had heated battles with one another occasionally. Silver and Knuckles first meet, albeit briefly, during the Solaris incident. Despite only meeting in End of the World, Knuckles appears to be impressed with Silver's determination and cheers on the hedgehog in his fight against Solaris.[92] Following the timeline reset when Solaris' flame was extinguished, the pair re-meet during the Onyx Island incident. Knuckles initially showed his dislike of Silver when he first met him, mainly because he thought that he was pompous and stuck-up. Silver's haughty and prickly attitude also tended to annoy Knuckles. However, they later put aside their differences and willingly teamed up together. In Sonic Forces, Knuckles was the first-person Silver warned about Eggman's attack, which led to the War to Take Back the Planet. In the game, Knuckles and Silver appear to be on very good terms with each other and work very well together. In fact, Silver appeared to be one of Knuckles' most trusted lieutenants, an indication that Knuckles has considerable respect for Silver.


During the War, Knuckles would be the commander of the Resistance and introduced the Avatar to the other but they at first did not have faith in him. Charmy would be quick to say he does not look like much, but Knuckles defends him Knuckles looks up to the Avatar seeing how he was the only civilian who after being attacked by Infinite wanted to continue the fight instead of hiding. Which is why Knuckles respects Avatar and supported him throw-out the War an even after the war no longer calling him "Rookie" proving Knuckles cares about Avatar.





  1. Calculation: Knuckles' strength predicated on Sonic's running:
    A 100-ton object requires a force that is at least equal to 1,000,000 newtons
    Force x distance = Work = Energy
    To figure out the number of joules Sonic produces when moving Mach 1, we use the Kinetic Energy formula, which is 1/2 x M X V^2; thus 0.5 x 35
    (Sonic's mass in kilograms) x 340^2 (Mach 1), which would be equal 2,026,452 joules
    Work needed to lift a 100-ton object for a distance of 2 meters is also 2 million joules, therefore, if Knuckles' strength is equal to Sonic's speed, then he should have enough energy to lift a 100-ton object 2 meters.


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 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 2.4 2.5 2.6 2.7 2.8 2.9 Devra Newberger Speregen (2016). Sonic: The Ultimate Character Guide. Scholastic. p. 15. ISBN 978-1338033243.
  3. 3.0 3.1 3.2 3.3 Sonic Team (31 July 1997). Sonic Jam. Sega Saturn. Sega. Area/Level: Sonic World, Museum. "Knuckles the Echidna profile."
  4. 4.0 4.1 4.2 4.3 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."
  5. 5.0 5.1 5.2 Sonic the Hedgehog 3 (Sega Mega Drive) Japanese instruction booklet, pgs. 34-36.
  6. Sonic the Hedgehog 3 (Sega Genesis) United States instruction booklet, pg. 6.
  7. Sonic Team (23 December 1998). Sonic Adventure. Dreamcast. Sega. Area/level: Station Square. "Knuckles: I hate big cities."
  8. 8.0 8.1 8.2 8.3 8.4 "All Star Cast". Sonic Adventure Tokyo International Forum Unveiling Booklet. 22 August 1998. p. 7.
  9. Sonic Team (6 February 2004). Sonic Heroes. PlayStation 2. Sega. Area/level: Grand Metropolis (Team Sonic). "Knuckles: I don't like this place. There's no living plants."
  10. 10.0 10.1 10.2 10.3 10.4 10.5 10.6 10.7 Sonic City. Archived from the original on 25 February 2008. Retrieved on 3 April 2008.
  11. 11.0 11.1 11.2 11.3 Sumo Digital (23 February 2010). Sonic & Sega All-Stars Racing. PlayStation 3. Sega. "Knuckles the Echidna - Knuckles is the guardian of the Master Emerald, which gives Angel Island its power to float in the sky. He is the last of the Echidnas - the island's native people. His name comes from his powerful fists, which allow him to punch through rock and make him a skilled burrower and climber. He can also use his dreadlocks to glide for short distances."
  12. 12.0 12.1 12.2 12.3 12.4 12.5 12.6 12.7 Sonic the Hedgehog (22 September 2022). TailsTube #3 (feat. Knuckles). YouTube. Retrieved on 2 October 2022.
  13. Sonic the Hedgehog 3 (Sega Mega Drive) Japanese instruction booklet, pgs. 34-36.
  14. 14.0 14.1 Sonic's Creator - Yuji Naka. Sega. Archived from the original on 5 June 1997. Retrieved on 28 August 2008.
  15. 15.0 15.1 "ソニックザヘッジホッグ3 / 誰もが驚いたロックオンシステム". Sega Magazine (Soft Bank) (8): 14–15. 13 June 1997. Archived from the original.
  16. Interview with Roger Hector, former Director of Sega Technical Institute. Secrets of Sonic Team. Retrieved on 28 February 2008.
  17. 17.0 17.1 "Sonic the Hedgehog Staff Interview - We Ask Yuji Naka about the Possibility of a Saturn Sonic". Sega Saturn Magazine (Soft Bank): 84–85. 7 January 1995. Archived from the original.
  18. "新キャラクター"ナックルス"". Sega Magazine (Soft Bank) (8): 14. 13 June 1997. "「3」は最新作だから、当然新キャラも、ということから、新規にデザインされたナックルズ。 当時はちょうど「ジュラシックパーク」を受けての恐竜ブームだったことから、最初は恐竜っぽいデザインから始まったというが、その後デザイン担当の湯田氏によってリファインされ、 アメリカ人好みのドレッドヘアになっていくことになる。"
  19. "誰もが驚いたロックオンシステム". Sega Magazine (Soft Bank) (8): 15. 13 June 1997. "当時新人だった飯塚氏は、この時の開発で大いに成長を遂げた一員だ。 ちなみに 「 3 」の新キャラナックルズは、じつはスタッフの間では赤や緑などの候補があがっていて中氏は紫を押していたとか。 でも、実際にアメリカの子供達を対象にリサーチをしたら、圧倒的に赤が大人気だったそうだ。"
  20. Sonic Central interview: Yuji Naka on Sonic's Past, Present, Future. Sega. Retrieved on 7 July 2008.
  21. Theobald, Phil (27 January 2006). Sega Talks Sonic Riders Part Two. GameSpy. Retrieved on 2 April 2014.
  22. Knuckles the Echidna Biography. IGN. Archived from the original on 4 March 2014. Retrieved on 26 October 2014.
  23. Thomas, Lucas M. (12 October 2007). Smash It Up! - Sonic Team. IGN. Retrieved on 26 October 2014.
  24. 24.0 24.1 24.2 24.3 24.4 24.5 24.6 Sonic Heroes (PlayStation 2) United States instruction booklet, pg. 5.
  25. 25.0 25.1 Sonic Heroes (PlayStation 2) Japanese instruction booklet, pg. 13.
  26. 26.0 26.1 26.2 Sonic Team (4 November 2010). Sonic Free Riders. Xbox 360. Sega. Area/level: Main menu. "Knuckles the Echidna - As tough as he is stubborn, this guardian of the Master Emerald is set to tackle the World Grand Prix with his usual wild passion."
  27. 27.0 27.1 27.2 Sega . Official Sonic Heroes website (Japanese). Characters: Team Sonic. Sega. Archived from the original on 7 December 2004. Retrieved on 25 May 2021.
  28. 28.0 28.1 28.2 28.3 28.4 28.5 28.6 28.7 28.8 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.
  29. 29.0 29.1 SEGA Asia(EN) (23 May 2022). Sonic Station LIVE! - April broadcast summary. YouTube. Retrieved on 21 January 2023.
  30. Sonic Team, Dimps (15 November 2005). Sonic Rush. Nintendo DS. Sega. Area/level: World Map (Sonic). "Sonic: You know, when Knuckles is angry... It's always difficult to talk to him."
  31. Sonic Jam (Sega Saturn) Knuckles the Echidna profile.
  32. Sonic Team (23 December 1998). Sonic Adventure. Dreamcast. Sega. Area/level: Station Square. "Knuckles: I hate big cities."
  33. Sonic Team (23 December 1998). Sonic Adventure. Dreamcast. Sega. Area/level: Station Square. "Knuckles: This place is noisy!"
  34. Sonic Team (6 February 2004). Sonic Heroes. PlayStation 2. Sega. Area/level: Grand Metropolis (Team Sonic). "Knuckles: I don't like this place. There's no living plants."
  35. Sonic Team (6 February 2004). Sonic Heroes. PlayStation 2. Sega. Area/level: BINGO Highway (Team Sonic). "Knuckles: Everything's twinkling and bright! I hate it!"
  36. 36.0 36.1 36.2 36.3 Sonic the Hedgehog #3, "Fallout, Part 3"
  37. Sonic the Hedgehog Annual 2022, "Guardians"
  38. BumbleKast Q&A for November 16th, 2020. YouTube (16 November 2020). Retrieved on 16 November 2020.
  39. 39.0 39.1 39.2 Sonic the Hedgehog #9, "The Battle for Angel Island, Part 1"
  40. 40.0 40.1 40.2 Sonic the Hedgehog #30, "Cured"
  41. 41.0 41.1 41.2 Sonic the Hedgehog #12, "The Cost of the Battle for Angel Island"
  42. Sonic the Hedgehog #29, "All or Nothing, Part 4"
  43. 43.0 43.1 43.2 Sonic Team, Sonic Team USA (27 February 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Holy Summit (Sonic's Episode). "Sonic: Don't worry. He's got lots of power, but his moves are simple to read. Watch for an opening, then hit him with a combo attack!"
  44. 44.0 44.1 Sonic Team (27 January 2004). Sonic Heroes. Xbox. Sega. Level/Area: Opening.
  45. Sonic Adventure (Dreamcast) Japanese instruction booklet, pg. 24.
  46. Sonic Rivals 2 (PlayStation Portable) United States instruction booklet, pg. 7.
  47. Sonic Heroes (PlayStation 2) United States instruction booklet, pg. 18.
  48. Sonic Team, Sonic Team USA (27 February 2004). Sonic Battle. Game Boy Advance. Sega. "Deep Impact - Knuckles's[sic] ground power. His Vigorous Straight Punch causes explosions with its enormous power."
  49. Sonic Team (3 May 2002). Sonic Adventure 2: Battle. Nintendo GameCube. Sega. Cutscene: Enter Knuckles.
  50. Sonic Team (27 January 2004). Sonic Heroes. Xbox. Sega. Level/Area: Ending sequence (Last story).
  51. Sonic Team (21 February 2006). Sonic Riders. Nintendo GameCube. Sega. Level/Area: Opening sequence.
  52. Sonic The Hedgehog 4. Sega. Archived from the original on 12 May 2013. Retrieved on 27 October 2017.
  53. Sonic Team, Sega Technical Institute (18 October 1994). Sonic & Knuckles. Sega Mega Drive. Sega. Area/Level: Opening sequence (Knuckles' story).
  54. Sonic Team, Dimps (28 March 2003). Sonic Advance 2. Game Boy Advance. Sega. Area/Level: Ending sequence (Knuckles' story).
  55. Sonic Team (11 November 2011). Sonic Generations. PC. Sega. Area/Level: Knuckles: Horde of Enemies.
  56. Sonic Team, Sonic Team USA (27 February 2004). Sonic Battle. Game Boy Advance. Sega. "Grinder Attack - Knuckles's air action. He's an expert at gliding."
  57. Sonic Team (27 June 2003). Sonic Adventure DX: Director's Cut. Nintendo GameCube. Sega. Area/Level: Egg Carrier. "Knuckles: I can sense the Emeralds are here somewhere!"
  58. Sonic Team (27 June 2003). Sonic Adventure DX: Director's Cut. Nintendo GameCube. Sega. Area/Level: Egg Carrier. "Knuckles: I sense the Master Emerald. It can't be far from here."
  59. Sonic Team (3 May 2002). Sonic Adventure 2: Battle. Nintendo GameCube. Sega. Cutscene: Last Chance. "Knuckles: I feel some strange energy..."
  60. Sonic Team, Dimps (15 November 2005). Sonic Rush. Nintendo DS. Sega. Area/Level: Zone Map (Blaze). "Knuckles: Hmph! Why do you look so suspicious? What do you have in your hands? / Blaze: Hmm...! / Knuckles: I sense a familiar power... Do you have Chaos Emeralds? / Blaze: (Chaos Emeralds?) (Are there gems here akin to the Sol Emeralds?)"
  61. Sonic Team, Sonic Team USA (27 February 2004). Sonic Battle. Game Boy Advance. Sega. "Knuckles Heal - Knuckles' heal skill. Uses earth elementals to heal damage."
  62. Sonic Team, Sonic Team USA (27 February 2004). Sonic Battle. Game Boy Advance. Sega. "Meteor Crush - Knuckles' air shot. He makes rocks fall from the sky using the supernatural power of the earth."
  63. Sonic Team (3 May 2002). Sonic Adventure 2: Battle. Nintendo GameCube. Sega. "Sonic: We're counting on you buddy! The world's greatest treasure hunter!"
  64. Sonic Free Riders (Xbox 360) United States instruction booklet, pg. 10.
  65. Sonic Team, Dimps (3 February 2002). Sonic Advance 2. Game Boy Advance. THQ. Area/Level: Sky Canyon Boss Attack.
  66. Sonic Team (3 May 2002). Sonic Adventure 2: Battle. Nintendo GameCube. Sega. Cutscene: Cutscene 1 (Last Story). "Sonic: Heh, just letting Knuckles pilot the shuttle all the way over here, was more dangerous than you could ever be!"
  67. Sonic the Hedgehog #9, "The Battle for Angel Island, Part 1"
  68. Sonic the Hedgehog #29, "All or Nothing, Part 4"
  69. Sonic the Hedgehog #11, "The Battle for Angel Island, Part 3"
  70. 70.0 70.1 Sonic the Hedgehog #8, "Silent Support"
  71. Sonic Jam (Sega Saturn) Knuckles the Echidna profile.
  72. Sonic Advance 3 (Game Boy Advance) United States instruction booklet, pg. 12.
  73. Sega (23 June 2016). Mario & Sonic at the Rio 2016 Olympic Games. Wii U. Nintendo. Area/Level: Collectibles (Flags). "A red echidna that boasts some serious muscle, Knuckles is what one might call 'best frenemies' with Sonic."
  74. ソニック・ザ・ヘッジホッグ【公式】 (20 January 2023). ソニック・ザ・ヘッジホッグ【公式】 on Twitter. Twitter. Retrieved on 21 January 2023.
  75. Sonic Team (27 February 2004). Sonic Battle. Game Boy Advance. Sega. Area/level: Emerald City (Knuckles' Episode). "Tails: Welcome back! You guys were gone a while! W-what happened?! You both look horrible! / Knuckles: Heh heh... [...] (Hey, Emerl! Let's just keep the fact that Eggman tricked me our little secret, ok?) / Emerl: (Sure thing, partner!) It's a secret, but my partner got tricked by Eggman again! A secret! Right, partner?! / Knuckles: Why you...!!!! / Sonic: Hey, guys! Looks like you're all having fun! / Emerl: Hey! Sonic! Hey, Sonic! Guess what! It's a secret, but Knuckles got fooled by Eggman again! / Knuckles: Emerl!!!!"
  76. Sonic Team, Dimps (9 March 2003). Sonic Advance 2. Game Boy Advance. Sega.
  77. 77.0 77.1 Sonic Advance 3 website (Japanese). Retrieved on 1 May 2015.
  78. Sonic Team, Dimps (12 November 2010). Sonic Colors. Nintendo DS. Sega. Cutscene: Mission 3-2: Success. "Tails: So, um, Knuckles? How'd he [Eggman] trick you this time? / Knuckles: He didn't trick me, okay?! / Sonic: Yeah, but how did he do it? / Knuckles: HE DIDN'T! / Sonic: All right, all right, yeesh. Don't get mad. / Tails: You guys are always so funny together."
  79. Sonic Team (9 September 1998). Sonic Adventure. Dreamcast. Sega. Area/level: Story Screens (Knuckles' story). "Knuckles: Now, why is Sonic collecting the pieces of the Master Emerald? Personally, I've got respect for him. I think he's a good guy, but if I have to, I'll take him out to protect the Master Emerald! Sonic, come get some!"
  80. Sonic Team (4 November 2011). Sonic Generations. PlayStation 3. Sega. Cutscene: Rescuing Knuckles (Modern). "Knuckles: Thanks for the help. Not that I needed it. But it's good to have my sanctuary back!"
  81. Sega . Sonic the Hedgehog European site. Characters: Knuckles the Echidna. Archived from the original on 15 March 2007. Retrieved on 5 May 2015. "Sonic's famous sidekick spends most of his time alone on Angel Island guarding the Master Emerald, so he's always happy to help Sonic out especially if it involves scrambling Dr. Eggman's evil plans for world domination."
  82. Cite error: Invalid <ref> tag; no text was provided for refs named StH10
  83. Sonic Team (21 February 2006) Sonic Riders. Nintendo GameCube. Sega. Cutscene: Before Splash Canyon. "Knuckles: Still, how can a plank like that [the Extreme Gear] just float? / Tails: That's easy to explain. According to the Kutta-Joukowski Lift Theorem, the control surface flow is balanced by the inverse kinetics of the-- / Knuckles: STOP!! I get it, okay?! It just floats and that's good enough for me!"
  84. Sonic Team (6 February 2004). Sonic Heroes. PlayStation 2. Sega. Cutscene: Before Hang Castle (Team Sonic). "Tails: Sonic, you sure this is the right way? / Sonic: I saw Shadow and Eggman head this way. This has gotta be the right way. / Tails: But it's so spooky here. / Knuckles: Maybe... that's the ghost of Shadow we saw earlier. / Tails: Whaaa...! Stop it, Knuckles!"
  85. Sonic Team (21 February 2006) Sonic Riders. Nintendo GameCube. Sega. Cutscene: Before Splash Canyon. "Amy: Oh that girl [Wave]! Who does she think she is?! / Sonic: Yeah! How can she just walk in and diss Tails? / Knuckles: I know! And tinkering's all he's really good at, too."
  86. Cite error: Invalid <ref> tag; no text was provided for refs named StH2
  87. 87.0 87.1 Cite error: Invalid <ref> tag; no text was provided for refs named StH62
  88. Sonic Team, CRI Middleware (22 February 2008). Sonic Riders: Zero Gravity. PlayStation 2. Sega. Cutscene: Before Aquatic Capital (Team Heroes). "Knuckles: What went flying just now? / Eggman: Do I look like a ball to you?! / Sonic: Eggman?! What are you doing here?! / Eggman: What do you mean? I own this company [MeteorTech]! Ahh ha ha ha ha! / Sonic: What!? So you're the ringleader behind this one too, Eggman? / Eggman: Ringleader? What the devil are you babbling about? / Sonic: Come on, cut the act. I'm talking about the global robot rampage! / Eggman: You must be joking. That's been quite a headache for me as well. / Knuckles: Like we'll believe anything you say! / Eggman: Calm down. We go way back, don't we? I'll let you in on something. Not even I know why are they've gone amok, but they appear to be following a leader. / Sonic: A leader?! ...Well, I guess for now we'll buy that Eggman isn't involved. / [...] / Eggman: Wh-Where did you get that [an Ark of the Cosmos]?! / Sonic: So you were holding out on us, Eggman! / Knuckles: Spill everything you know. Now! / Eggman: Very well. I'll tell you..."
  89. Team Sonic Racing One-shot
  90. Sonic Team (6 February 2004). Sonic Heroes. PlayStation 2. Sega. Level/Area: Metal Overlord. "Vector: We have to counter the battleships he throws with power! Knuckles... Show him your powerful punches, OK? Don't hold back anything!"
  91. Sonic Team (7 November 2017). Sonic Forces. PlayStation 4. Sega. Level/Area: Capital City. "Vector: Ha! Great speech! Let's give Eggman an old-fashioned beat down!"
  92. Sonic Team (14 November 2016). Sonic the Hedgehog. Xbox 360. Sega. Area/level: Solaris phase 2 (Last Episode). "Knuckles: Don't hold back, let 'em have it Silver!"
Knuckles the Echidna