— Sonic the Hedgehog, Sonic Adventure 2
Sonic the Hedgehog (ソニック・ザ・ヘッジホッグ Sonikku za Hejjihoggu?, born 23 June) is Sega's mascot and the eponymous main protagonist of the Sonic the Hedgehog series. He is an anthropomorphic blue hedgehog born with the ability to run faster than the speed of sound, hence his name, and possesses lightning-fast reflexes to match. As his species implies, Sonic can also roll up into a concussive ball, primarily to attack enemies.
Ever since stepping into the battle against iniquity, Sonic has been the champion of peace and is renowned all over the world for saving it countless times. During his many adventures, Sonic has traveled from the ends of the world to the far reaches of space and time, facing countless trials that have tested him to the fullest, earning him many titles, allies, and the scorns of several foes. Well-known for his legendary cocky attitude, easy-going demeanor, and somewhat short temper, yet strong sense of justice, compassion, and love for freedom and adventure, Sonic uses his abilities to protect the innocent from his world and those beyond from the forces of evil, especially his arch-nemesis, Dr. Eggman.
- 1 Concept and creation
- 2 Appearance
- 3 Personality
- 4 Powers and abilities
- 5 Weaknesses
- 6 Relationships
- 6.1 Dr. Eggman
- 6.2 Miles "Tails" Prower
- 6.3 Amy Rose
- 6.4 Metal Sonic
- 6.5 Knuckles the Echidna
- 6.6 Shadow the Hedgehog
- 6.7 Rouge the Bat
- 6.8 Cream the Rabbit
- 6.9 Blaze the Cat
- 6.10 Silver the Hedgehog
- 6.11 Dr. Eggman Nega
- 6.12 Princess Elise
- 6.13 Marine the Raccoon
- 6.14 Shahra
- 6.15 Erazor Djinn
- 6.16 Knights of the Round Table
- 6.17 Chip
- 6.18 Jet the Hawk
- 6.19 The Deadly Six
- 6.20 Classic Sonic
- 6.21 Infinite
- 6.22 Avatar
- 6.23 Friends/allies
- 6.24 Rivals
- 6.25 Enemies
- 7 References
Concept and creation
While several people have been involved in the creation of Sonic, the artist Naoto Ohshima, programmer Yuji Naka, and designer Hirokazu Yasuhara are generally credited with the creation of the character.
In April 1990, Sega requested a game capable of selling more than 1,000,000 copies; a character who could compete against Nintendo's Super Mario, and a character to replace Alex Kidd as the company's mascot. Several character designs were submitted by its AM8 research and development department. These included an armadillo (who was later developed into Mighty the Armadillo), a dog, a Theodore Roosevelt look-alike in pajamas (who was later used as the basis of the design of the main antagonist Dr. Eggman) and a rabbit (who would use its extendable ears to collect objects, an idea that was later used for a separate Sega character named Ristar). Eventually, the mascot they selected was Naoto Ohshima's submission, a spiky teal hedgehog codenamed "Mr. Hedgehog" (Mr. ハリネズミ Mr. Harinezumi?), later renamed Sonic. Initial ideas for names for Sonic included "Raisupi" and "LS", truncation and plays on the word "light speed". However, due to a mistranslation of Ohshima's notes by English-speaking fans, it was believed that Sonic's original development name was "Mr. Needlemouse" until it was corrected by Yuji Naka on 24 January 2021.
Sonic's color was based on the Sega logo, his shoe buckles based on Michael Jackson, his shoe color based on Santa Claus, and his personality was inspired by future-President Bill Clinton's "get it done" attitude, whom Ohshima felt embodied a modern sensibility of wanting to get things done right away, righting wrongs as they presented themselves instead of letting them linger. According to Yuji Naka, Sonic's color also serves to symbolize peace, trust, and coolness (which are the attributes of Sonic's character). His trademark speed is based on Super Mario Bros. World 1-1, with Sonic creator Yuji Naka stating in issue 260 of Nintendo Power that "I always tried to get through the level as fast as I could," which inspired the initial concept for Sonic the Hedgehog. Sonic was created without the ability to swim because of a mistaken assumption by Yuji Naka that all hedgehogs could not do so.
A group of fifteen started working on Sonic the Hedgehog and renamed themselves Sonic Team. The game's soundtrack was composed by Masato Nakamura of the band Dreams Come True. Sega sponsored the group's "Wonder 3" tour, painting Sonic on the tour bus, distributing pamphlets advertising the game, and having footage of the game broadcast above stage prior to its release.
The original concepts gave Sonic fangs and put him in a band with a human girlfriend named Madonna. However, a team from Sega of America, led by Madeline Schroeder, "softened" the character up for an American audience by removing these elements. This sparked a heated issue with Sonic Team. Naka later admitted it was probably for the best. Sonic's precise age, weight, height, and other physical characteristics vary depending on the continuity in which he appears and the style in which he is drawn. In the video games, Sonic's original design by Naoto Ohshima was with short spikes, a round body, and no visible irises. Artwork featuring this design and drawn by Akira Watanabe was displayed on the package artwork for Sonic the Hedgehog and most subsequent Sonic video games featured similar designs. When Sonic the Hedgehog 2 for the Mega Drive appeared, Sonic's proportions changed. The original 1:2 head to height ratio changed to 1:2.5.
Beginning with Sonic Adventure in 1998, Sonic was redesigned by Yuji Uekawa as a 15-year-old character, with longer legs and a less spherical body, longer and more drooping spikes, and emerald-green-colored eyes. Sonic was also purposefully made more of a “bad boy” for Sonic Adventure, so that his character did not become too cutesy like so many other character mascots (Yuji Naka stated that Hello Kitty already owned the market in cuteness). Further changes to the character's design were made in subsequent games, namely in Shadow the Hedgehog and Sonic the Hedgehog (2006) adding visible fur, a more realistic design for a human world, and making him a bit lankier.
Sonic is a slim anthropomorphic hedgehog with blue fur that covers most of his body, and peach skin that covers his arms, muzzle, insides of his ears and front torso, along with small, triangular ears on top of his head. He had a round head and an equally round torso in his younger years, with black eyes. However, he developed green eyes as he became older. Sonic was also shorter and stubbier, but he has since grown significantly taller and thinner since then. He also has six long quills on the back of his head, two spines protruding from his back behind his shoulders, and a short tail.
For attire, Sonic wears light-weight, hyper friction-resistant red sneakers with white cuffs around the ankles, gray soles, and white straps across the top, the last of which are held down by a golden buckle on each foot. He also wears a pair of white gloves with sock-like cuffs on his hands.
Sonic is said to be "like the wind"; a drifter that is always on the move and is noted for being free-spirited and adventurous. He values freedom above all else and strives to live his life according to his own rules rather than the standards of those around him or for the sake of heroism and duty, never thinking twice about what other people say or think. Born to run, Sonic enjoys nothing more than traveling the world. Endowed with a strong passion for enjoying life, he is never in one place for long and always moves forward to look for his next challenge, making his life a never-ending series of adventures. Because of his need for freedom, Sonic loathes the idea of being constrained, and being cooped up for too long makes him twitchy and restless.
Sonic's demeanor is always easygoing, cool, and carefree. However, he is often impatient, hates boredom, and at times possesses a short temper. Because of his impulsive nature, Sonic can be reckless and quick to act before thinking, throwing himself into trouble without a second thought and regards for others' warnings. Nevertheless, he is honest, fearless, and always keeps his promises.
Sonic's personality is a juxtaposition of kindness and ferocity. He is extremely benevolent, driven by his own strong sense of justice and fair play, and firmly stands for truth and freedom. However, he is never the one to rest in the face of injustice or oppression. He hates lies and evil in all its forms, exploding with anger when witnessing anything unjust and will do all he can to snuff it out, throwing his life on the line without hesitation. However, he usually sees his heroics as an opportunity to have fun, making him a thrill-seeker. To Sonic, saving the world is no big feat and just another thrilling episode in his life. When he finds himself in a pinch, he acts as though nothing can stop him. In times of crisis, though, he is aggressive and focuses intensely on the task at hand as if his personality has undergone an astonishing change. At the same time, Sonic has a big and kind heart and is fully committed to helping out anyone in need at any time, even if it means getting himself into trouble or being despised by others.
Sonic has a lot of self-confidence and possesses an enormous ego to match it, making him sassy, quick-witted, cocky, and at times overconfident. No matter the threat or how dangerous, Sonic always remains cool under pressure. In the original Japanese version, Sonic omits honorifics and speaks informally (if not rudely), using "ore" instead of "I" when addressing himself or others ("ore" is a boastful way to say "I" in Japanese). However, he sometimes uses honorifics when addressing close friends or acquaintances. Possessing a narcissistic tongue and big attitude, he often jokes around to light the mood and will also take any opportunity to taunt his opponents. Being so smug, he has developed a habit of talking to mindless robots, even when he knows they cannot hear him. Despite this, he can be quite the gentleman when he wants to and be modest with fancy titles. Also, while Sonic generally assumes he can deal with things on his own, he also realizes he has friends to back him up in troubling situations and believes strongly in teamwork. Owing to his smugness and confidence, he often engages in playful banter with his enemies, such as his asking Infinite, as "optional" questions to glean into what the secret behind the latter's powers were, what the latter's favorite color was and whether he liked long romantic walks on the beach, as well as "asking" a Zavok replica if he would let Sonic join a party occurring on the Death Egg (referring to the commotion resulting from the Resistance's infiltration of the area). Sonic is likewise very competitive; while he takes no interest in challenges he knows he can win easily, Sonic always welcomes a good competition that has him squaring off against others on even ground. Sonic likewise never holds back when pitted against others in a test of skills and abilities, and is not above trash-talking to his opponents.
Following his free-spirited nature, Sonic never dwells on the past or allows his painful experiences to weight him down. Instead, he lives in the present and always looks forward to his next adventure, holding no regrets for what has transpired. It is only in the moments of greatest loss that his macho and carefree appearance falls away. Sonic is also of incredibly strong character and will: No matter the situation, he never doubts himself or gives up, never once submitting to the darkness in his heart.
Sonic is extremely loyal to his friends and will risk his life for them without any due consideration. While he can leave them hanging, act rude towards them, or endanger them due to his fast-paced nature, Sonic never intends to make his friends unhappy and values them above all else, treating each of them as the most important person in his life. Equally, Sonic will always accept help from his friends and show great trust in them.
Regardless of the many foes he has faced, Sonic rarely considers them true enemies and instead tends to admire them for how powerful some of them are and how much fun they can give to him. Likewise, he is shown to have a remarkable capacity to forgive, forgiving Silver and working with him after he had tried to kill him twice.
Despite his outward demeanor, Sonic has shown to be much more insightful than he usually lets on, capable of seeing things others would have overlooked and give valuable and comforting advice that drastically changes the outlook of others, such as in the case of Elise, Merlina, and Blaze. This insight, combined with a charismatic personality, allows Sonic to get along with virtually anyone he meets, even if they were his enemies at one point.
Sonic has a fondness of the beauty of nature and he stands as a protector of it. He appreciates scenic views as seen in Sonic Colors and showed anger and rage when he found out that Eggman was polluting Planet Wisp's beautiful environment. In Sonic the Hedgehog (2006), Sonic is also shown to have a fondness for locations that are filled with flowers, trees, and other kinds of plants. Ironically, despite his inability to swim, Sonic also loves going to the ocean.
Sonic has been shown to enjoy music, but seems to have a special interest in rock music. Furthermore, it was displayed during the Sol Emerald incident that Sonic also enjoys break dancing, which is reflected in his Trick Actions. His battle moves seen during the Emerl incident are also based on break dancing as mentioned in the attack descriptions. He also break dances in numerous games, usually when he is victorious.
Sonic tends to get irritated when his enemies often misidentify his species, namely by calling him a rat, making him correct them and state his actual species is a hedgehog. This was best demonstrated with his encounters with Erazor Djinn, and to a lesser extent with his encounter with Infinite at Mystic Jungle.
Powers and abilities
Despite not having undergone any known training, Sonic's years of battles have made him a skilled and powerful fighter. He has defeated giant robots, demons, and god-like beings on his own, gone up against and bested those with far more combat experience, and even beaten people who are his equal in abilities. It has also been noted that Sonic is steadily growing stronger; during the Time Eater incident, Sonic could beat the Egg Emperor and Perfect Chaos on his own where he previously required additional power to defeat them. Sonic even told Infinite upon holding his own against the latter compared to the previous time they fought that he becomes more powerful every second. It is safe to say that Sonic is far more powerful than he lets on, but his overconfidence and reluctance to go all out usually keeps him from fighting at full strength. His victories over Emerl at the Gizoid's maximum potential and Perfect Chaos in his base form are prime examples of Sonic's true power. Regardless of his blocks, Sonic ranks amongst the most powerful characters in the series.
Sonic's greatest strength is his super speed. He has proven himself to be in a class of his own with his speed, having been credited as "the fastest thing alive" and even the fastest being in the universe. He has the ability to instantly accelerate to the speed of sound and run at speeds far greater than Mach 1, which is at the blistering speed of about 768 mph, and can run backward just as well as he can forwards. Due to such speed, he can scale vertical surfaces and ceilings, run over water, outspeed lasers, and even cause the ground to explode in his wake. Even then, Sonic can take his speed even further. By revving up in one place, he can take off at turbo speeds in an instant. He can also envelope himself in a blue energy field that lets him accelerate beyond the sound barrier on both the ground and in midair for a short time, allowing him to not only smash straight through enemies and obstacles like a living projectile, but also fly immense distances through midair. Using certain techniques, he can even achieve light-speed momentarily.
It is unknown what Sonic's unaided top speed is. In Sonic Battle, it is stated he can move several times the speed of sound and when facing Ultimate Emerl, he went at least ten rounds with him in less than thirty seconds. It has also often been stated that Sonic can move at supersonic speed (which ranges from 915-3,840 mph), and he has once been called the "the world's fastest, hypersonic hedgehog" (which ranges from 3,840-7,680 mph). There are as well records stating that Sonic can move faster than the speed of light, although their accuracy cannot be guaranteed. However, E-123 Omega himself calculated that Sonic's speed could potentially exceed light speed and Sonic has boasted that light speed is "small time" to him.
Sonic has demonstrated complete mastery of his speed in any environment and can use it for both high-speed offense and defense. Not only can he run at maximum tilt in straight lines, but also in full tight circles and through sharp turns with full control over his momentum. As far as stamina goes, Sonic's is seemingly limitless as he is never winded from running. His speed also allows him to perform several impressive feats: he can heal himself by vibrating his body, launch shockwaves by spinning rapidly, leap in midair, launch stunning waves with fast kicks, increase the force of his blows by striking with increased momentum, and create barriers of super speed. He can also spin in circles or rotate his extremities at super speed to create winds strong enough to attack or blow away opponents, similar to aerokinesis.
Sonic possesses astounding kineticism, precision and has reaction time to match his speed. He has profound acrobatic skills and agility, along with enhanced reflexes that lets him avoid any incoming obstacles with precise and delicate movements. As seen in his first meeting with Silver, Sonic can even detect attacks beyond his field of vision due to his sharp reflexes. When launched into the air, he can also pull off several tricks before landing. He also has incredible jumping skills, capable of jumping up to several hundred meters even with extra weight.
Sonic possesses enhanced strength. He can push and lift things several times bigger and heavier than himself, run without extra weight slowing him down and his attacks can smash through metal and rock, and damage foes countless times his size. However, it is debatable whether the latter's power comes from his speed, strength, or a combination of both. Sonic's strength particularly lies in his legs; with a single kick, he can topple the Egg Golem, knock back several Egg Gunners at once and send Badniks flying. This does not mean that Sonic's arms are not strong either; he has enough strength to tear robots apart by hands and punch through a collapsed wall.
Sonic has several times demonstrated extreme resilience to damage. He can survive getting caught in the crossfire from all angles by Eggman's robots (which only knocked him out cold briefly), withstand the force of a massive explosion and a Hyper-go-on-based black hole unscathed, being pummeled with swords, and smash through several robots with his fist without discomfort, and take a ruthless pummeling from the Time Eater. Additionally, Sonic has more than once survived impacts from falls at extreme heights, bordering at the edge of space, only to shake it off when landing, and has even withstood atmospheric entry.
Even at night, when I'm like this. I'm still myself. Not like all the other people we've seen. You must have been protecting me this whole time.
I haven't done anything, Sonic. You're the reason you haven't changed at all. You're too strong to lose yourself!
I'm the reason?
Yeah! You never doubt yourself, no matter what. You never give in to the night, or to the darkness inside your heart.
— Sonic the Werehog and Chip, Sonic Unleashed
Sonic possesses an unbreakable and incorruptible spirit; in situations where most others would give up and where he is severely outnumbered and outgunned, Sonic never loses faith in himself and never surrenders. This trait enables him to keep on fighting when utterly exhausted or after taking an abnormal amount of damage. His will even lets him withstand mind-controlling powers, like the corruptive influence of Dark Gaia and the Overmind's psychic powers, though he did have some protection in the latter case. Even when possessed by the Ifrit, Sonic was arguably able to occasionally regain control.
Sonic's core offensive maneuver is the Spin Attack, a technique where he curls into a concussive ball or cutting disk and directs himself at his targets. With it, Sonic can shred or burrow through just about any substance given enough speed and hit with enough force to pierce colossal boulders. Highly adept in its usage, Sonic can utilize several variants of the Spin Attack for both ground- and aerial maneuvers, including the Spin Dash, Spin Jump, Homing Attack, and the super-charged Focused Homing Attack.
Even without his Spin Attack, Sonic is a skilled hand-to-hand combatant. He mostly relies on his fast footwork since the majority of his power lies in his legs, though he has been known to use his fists and arms as well, albeit in a rather straightforward manner. His fighting style is mostly derived from breakdancing moves which utilize Sonic's legs to their fullest, allowing him wide-ranged and swift kicks. He has also been known to use flying forward kicks, split kicks, and scissor kicks. Sonic is also shown to excel in swordsmanship. Even as a rookie swordsman, Sonic could beat a dragon and after receiving formal training, he could best master swordsmen like the Knights of the Round Table. In addition to using advanced techniques, Sonic can apply his speed to his swordplay for quick and swift slashes, and become a buzzsaw by spinning with his sword, enabling him to slice clean through enemies. He has also learned the martial art of Linshao Kung Fu from Shuifon, though he is yet to be seen using it.
Sonic has proven himself as a world-class Extreme Gear rider. He is said to move faster than he can run on an Extreme Gear and can go head-to-head with legendary Wind Masters like Jet the Hawk. Sonic seemingly has a knack for Extreme Gear riding, quickly grasping the controls on his first try and later developing advanced techniques despite being self-taught. After the second World Grand Prix, Sonic can be considered the best Extreme Gear rider in the world, having beat Metal Sonic in a race, who at that point was an "unbeatable" rider with the skills of the world's finest Extreme Gear riders at his disposal.
Sonic have extraordinary skill in operating vehicles. He has excellent skills when it comes to piloting planes like the Tornado, driving and racing at high speeds in cars like the Speed Star, and water bike surfing on vessels like the Wave Cyclone. He is also experienced in a variation of sports such as boarding and surfing (he is skilled enough to keep from bailing) and other recreational activities like grinding. Sonic also appears to be an excellent gunner, capable of using the Tornado and Tornado-1's on-board weaponry with immense accuracy.
It appears that Sonic can control the strength and durability of his otherwise soft quills at will. While he is in spinball form, they appear to be extremely hard like buzzsaw blades; as demonstrated during the Neo Metal Sonic incident, his quills (and body) are durable enough to slice through battleships without even moving at the speed of sound. In addition, Sonic's quills can sense nearby dangers, which they warn him about by creating a tingling sensation. Sonic has also demonstrated the ability to transfer his speed throughout various parts of his body, allowing him to immediately set off from stationary positions and even channel it into objects to speed up their movements and make them pierce through solid objects as he does while running. He can also create an effect reminiscent of a time halt, even though it is unknown what it is derived from.
Though he does not prefer to use weapons (mainly dissing firearms), Sonic has wielded a number of tools during his adventures, albeit never permanently. During the Space Colony Ark incident, Sonic used 2G Hi-Speed Shoes, which were specifically made for grinding. Also, during the Emerl incident, he utilized deployable landmines in battle, and one time, he would wield his own version of the Piko Piko Hammer. On his trip through the world of the Arabian Nights, he also wore Shahra's Ring, allowing him to harness Shahra's magic for himself. Similarly, in the world of Camelot, Sonic would wield swords; he initially wielded Clarent, but later exchanged it for Caliburn, a sentient sacred sword with magical properties.
By using all seven Chaos Emeralds, Sonic can enter a Super State, transforming him into Super Sonic. Easily his most frequent transformation, Super Sonic is one of Sonic's strongest forms. In this state, all of Sonic's abilities far surpass his normal ones. He is also able to fly and is nearly invulnerable. However, this transformation consumes a lot of energy, meaning it cannot be maintained for long.
By using the power of the seven Super Emeralds, Sonic can achieve an extended and more powerful form of Super Sonic called Hyper Sonic. This form basically shares the same traits as Super Sonic, except Hyper Sonic commands greater power and all of his Super State abilities are greatly enhanced.
A weaker variant of the super transformation. Sonic is capable of using this mode for a brief time on his own in Sonic the Fighters by drawing power from the Chaos Emeralds. In Hyper Mode, Sonic's speed and attack power greatly increase.
By harnessing the World Rings of rage, hatred, and sadness, Sonic can become Darkspine Sonic, a form powered by his emotions over Shahra's death. In this state, he can fly, has greater strength, unlimited usage of his Soul Gauge powers and pyrokinetic abilities. However, because of the intense emotions sealed inside the World Rings that Sonic uses to transform, he becomes slightly darker and more violent.
By using the power of the four sacred swords, Sonic is able to transform into Excalibur Sonic. This form grants Sonic a strong golden armor with a red cape, the ability to fly, greater strength and the power to wield the legendary sacred sword Excalibur.
Sonic the Werehog
After unwillingly absorbing the corruptive energies of Dark Gaia, Sonic gained the power to turn into a werewolf-like form named Sonic the Werehog at night time. In this state, Sonic loses his trademark speed, but he still retains his lightning reflexes and agility. He also gains super strength, sharp claws, extendable arms, and limited energy control. While Sonic's strong will prevents him from going bonkers like most others would, he does gain some minor feral behavior. He permanently lost this form before his battle with Dark Gaia when the energy from Dark Gaia that granted him his Werehog form was re-absorbed by Dark Gaia.
By harnessing different variants of Hyper-go-on from Wisps, Sonic can use specific Color Powers to transform into a certain form, such as a drill, a laser or even a fireball, each one possessing its own unique abilities. So far, Sonic has been able to transform into the Cyan Laser, Yellow Drill, Blue Cube, Green Hover, Pink Spikes, Purple Frenzy, Violet Void, Orange Rocket, Red Burst, Indigo Asteroid, Magenta Rhythm, Crimson Eagle, Ivory Lightning, Gray Quake and Black Bomb. However, these transformations require a steady supply of Hyper-go-on to be maintained.
Noted to not be the strongest swimmer, Sonic is incapable of swimming properly and sinks like a stone in water. This may be due to aquaphobia (Sonic thinks that if he falls into water, he will be trapped with no one to get him out), though he does not demonstrate that fear very often. In some situations, he can bypass his weakness to water by running or sliding across its surface, leap out of the water with successive jumps, and survive extended periods of time underwater with Air Bubbles.
It has been stated that if Sonic does not sleep for eight hours during the night, it will spoil his running. In addition, he has trouble keeping his balance when coming to a sudden halt when running at high speed.
During his adventures, Sonic has encountered many people and throughout it all, he has received many friends and foes alike. Sonic is well-known with his brotherly relationship with Tails, his friendly rivalry with Knuckles and his fierce rivalry with Shadow. Sonic's arch-enemy is Dr. Eggman, but Sonic has come across even greater enemies throughout his adventures and escapades.
— Sonic the Hedgehog, Sonic Generations
Dr. Eggman is Sonic's eternal arch-enemy and nemesis, whom he has known longer than anyone else. Along with Tails, Eggman is one of the figures who has often shaped Sonic's destiny. Because of Sonic's hatred of anything unjust, he holds a great mutual loathing for the doctor and his evil plans to take over the world and has spent years rescuing the victims of Eggman's conniving schemes. Whenever Eggman hatches a plan to conquer the world, Sonic always shows up and thwarts him. Because they always fight each other to win, Eggman has become a longtime rival of Sonic's as well as an enemy. Also, whenever Sonic's anger explodes over injustice, he always makes Eggman the receiving end of this aggression.
Despite his dislike of Eggman, Sonic has never really taken account of his adversary and does not consider him his enemy in the true sense of the word. Whenever dealing with Eggman, Sonic remains fully confident that he can spoil his plans and never really takes them seriously. In fact, Sonic finds entertainment in spoiling Eggman's plans, seeing as a way of making his life an adventure, and is so used to beating him that he considers it an everyday job.
Usually, Sonic is rather frank or taunting towards Eggman and will almost always seize the opportunity to tease him with jokes and sarcasm. Sometimes, Sonic even finds Eggman more bothersome and annoying than threatening: when he discovered Eggman was behind the Time Eater in Sonic Generations, Sonic just facepalmed and shrugged disapproving. Nevertheless, he remains vigilant about Eggman and his actions, like when he alone refused to believe that Eggman had turned over a new leaf in Sonic Colors. In the cases Sonic does deem Eggman a legitimate threat though, he becomes very serious about the doctor and targets him with fierce anger.
When presented with a more terrible threat that endangers both of them and their goals, Sonic is willing to put aside his differences with Eggman and join forces with him to stop it. Even in such cases though, Sonic remains reluctant about it, feeling that teaming up with Eggman is like the end of the world and a dirty affair, and will in some cases suspect the doctor has an ulterior motive (which is often proven true). Because of Dr. Eggman's complicated tendency to instantly switch between morals, Sonic has a hard time figuring him out.
While Sonic has been known to make fun of Dr. Eggman by using his alias instead of his real name (which was possibly given by Sonic), he actually uses this name affectionately rather than trying to make fun of him.
In spite of Eggman's horrible deeds, Sonic is content with simply stopping him and is never out to put him out of commission for good on purpose. Because of Eggman's tendency to survive their encounters and refusal to give up however, the doctor always returns with a new scheme, prompting Sonic to stop him again. As such, Sonic remains forever locked in a conflict with Eggman where it is nearly impossible for both individuals to defeat the other once and for all, making their battle a never ending one.
Miles "Tails" Prower
I've changed a lot since I've started hanging out with Sonic, but I can't depend on him forever.
— Miles "Tails" Prower, Sonic Adventure.
Miles "Tails" Prower is Sonic's best friend and sidekick, as well as his most faithful and loyal friend. Besides Eggman, Tails is one of the figures in Sonic's life who has often shaped his destiny. Sonic first met Tails on West Side Island where he noticed Tails following him. Though he was not interested in Tails at first, Sonic grew impressed with his tenacity when he kept up with him and let him tag along. When Dr. Robotnik then attacked West Side Island, Sonic joined Tails when the fox followed him into the conflict. In time, Tails proved himself a great ally to Sonic, and after defeating Robotnik, the two had built the foundation for the friendship that would define their future. Eventually, Sonic took Tails under his wing as his sidekick and took upon himself to train him. In time, the fox would become his protégé. Additionally, Sonic would stop bullies from teasing Tails for his twin-tails, which only improved Tails' admiration of him.
Since meeting each other, Sonic and Tails have been inseparable, their friendship having grown to the point where they have a brotherly relationship. In Sonic Advance 3, they are noted to have an "Unbreakable Bond", and they have even been referred to as the "fastest, coolest duo of all time". Also, when Tails was once mind-controlled into fighting Sonic, Sonic never laid a finger on him in refusal to hurt his friend. Sonic himself sees Tails as a cute surrogate/adopted kid brother and looks over him accordingly. However, he also sees Tails as a reliable partner and treats him as his equal partner on their adventures. The fact that Tails can as well move at great speeds by rotating his twin-tails and can fly in the air has helped Sonic many a times when he has found himself in trouble. Additionally, Tails's skills as a mechanic, as well as his intellectual prowess has aided Sonic many times on his adventures. As such, Sonic places a immense amount of trust in Tails because he helps him on his travels, and because Tails often provides good perspective on where he should go. Whenever on an adventure, Sonic always asks Tails to come along and will accept his help at any time. That said, however, Sonic will at times ignore Tails when he gives advice or information, often when it is most useful, though he is big enough to admit he should have listened to him.
Sonic cares very much for Tails' well-being. He will not hesitate to threaten those who endanger him and will always make his safety his top priority, regardless of the matters on hand, like when he sent Tails away against his will when the Nega-Wisp Armor attacked them. Similarly, after Wave the Swallow mocked Tails ath the first World Grand Prix, Sonic was angered by her behavior and exasperatedly defended him. When Tails finds himself in doubt, Sonic is always there to give him moral support. Throughout their adventures, the two have proven themselves a perfect team who can handle nearly anything; both provide strengths to the other's weaknesses (Sonic handles the muscle while Tails handles the smarts) and neither of them would get far without the other's aid. Tails as in particular proven himself Sonic's most reliable ally, always providing him with invaluable help, knowledge, and machines. In turn, Sonic is impressed with Tails' work and considers his technical skills unparalleled, though this faith makes him leave all the tech work to him.
Sonic usually holds absolute faith in Tails' skills, although that faith has been known to waver. When Sonic planned for Dr. Eggman to do the tech work to save the world from the Deadly Six's abuse of the Extractor, his own frustrations over having caused the mess they were in made him doubt Tails' skills. This would strain their friendship over time. At the end though, Sonic apologized for doubting Tails, mending their brotherly bond.
Perhaps the biggest strength of Sonic and Tails's friendship is the united bond their hearts share. Whenever the two are around each other, they both feel as if they can overcome any struggle they may be facing. Also, without even having to say anything to each other, they know inside of themselves what is needed of themselves to be a good partner to the other. As such, it can be speculated that there is something that surpasses even trust between the two of them.
— Sonic the Werehog, Sonic Unleashed
Amy Rose is one of Sonic's oldest and most loyal friends, and his self-proclaimed girlfriend. Since meeting Sonic, Amy has looked up to him as her hero and been madly in love with him, and her greatest wish is to marry him. Sonic first met Amy during his adventures on Little Planet where he saved her from Metal Sonic and Dr. Robotnik's captivity which made them fast friends. Right from the start though, Sonic has not liked her like a girlfriend or reciprocate her advances. However, this attitude has done nothing to deter Amy.
Since their first meeting, Amy has chased Sonic down wherever he goes, with Sonic seemingly unable to escape her, and has tried to win his heart by any means. Sonic, however, is rather annoyed by her affection and even disturbed by her over-the-top displays, which makes him treat Amy as little more than an annoyance and deem her weird. As such, Sonic considers Amy a near constant pain in his life. Whenever Amy tries to show him affection, Sonic gets rather uncomfortable, exasperated or embarrassed and will try to avoid her when she goes overboard, usually by running away or by more rude means. Rejecting the idea of marrying Amy, Sonic would rather be locked up in a cell than marrying her (which is no small statement considering Sonic's loathing of being constrained) as seen during the Space Colony ARK incident. Additionally, Sonic fears Amy's anger; he will become nervous or run away when he thinks he has provoked her, and Sonic often finds himself overwhelmed by her powerful personality. Usually, that leads to Sonic going along with Amy's demands for a date or wishes to come along on his adventures, although he always seize the opportunity to run away from her scot-free when he can. Over the course of the series, Sonic running away from Amy has become a running gag.
Regardless of how much dismay Amy has put Sonic through, she is still considered one of his closest friends and a reliable partner of his. It is stated that in his heart he may not dislike her as much as it seems, and that deep down he might actually have some feelings for her. During the Dark Gaia incident, Sonic was even stumped that Amy did not recognize him as the Werehog, and when he shortly after saved her from some of Dark Gaia's Minions, he initially chose to run away than face her with his condition. Fortunately, after learning that Sonic was inside the monster form, she claimed to him that he was still the Sonic she loves. Additionally, during the Lost Hex incident, Sonic was crestfallen when he thought Amy and the others had died from the Extractor.
When Amy does show maturity, Sonic's friendship with Amy becomes much more positive. An example of this is shown just before and during Dodon Pa's Grand Prix, where Amy very rarely obsesses over him, which in turn makes Sonic more comfortable about being around her, like when she invited him to a picnic, and he agreed.
Overall, Sonic cares about Amy as a good friend and worthy comrade whom he can rely on, and he appreciates her efforts to help him when she is not flirting with him. Their relationship has been described as somewhat subtle in nature. In reality though, Amy's self-paced temper and the untidy reaction that comes from Sonic in these situations is more or less a stable and carefree exchange between the two. Though it also may be due to Amy's spirit, during the adventures and competitions they have been through, a certain bond of trust has grown between Sonic and Amy. In fact, because of the long relationship they have had for some reason, they have gotten a deepened understanding of each other.
When Amy is in trouble, Sonic will likewise always be there to help her out should the need arise, though he tends to overlook her when she is caught in the middle of his showdowns with the villains.
Metal Sonic is Sonic's robotic alter ego, created by Dr. Eggman for the sole purpose of destroying him. He is one of Sonic's earliest foes and his first true rival, being able to copy both his speed and power. Both of them share a violent rivalry/enemy relationship with each other. Sonic first encountered Metal Sonic on Little Planet where the robot kidnapped Amy Rose, forcing Sonic to defeat him to save Amy, inadvertently turning Metal Sonic from one viewing him as an enemy into a bitter and deadly rival. On the other hand, Sonic has never considered Metal Sonic his enemy in the true sense of the word.
Since meeting each other, Sonic and Metal Sonic have almost always fought whenever they meet, never once having an instance where their objectives align. In Sonic's opinion, Metal Sonic is the worst creation Dr. Eggman has ever made due to how it always causes trouble for him, and he views Metal Sonic as a very serious threat. Regardless, Sonic always remains confident that he can beat Metal Sonic and considers him a "lame robot copy" which can never match up to the original that is him. Still, this does not keep him from enjoying testing his skills against him.
Over time, Sonic and Metal Sonic have had countless fights, with Sonic always managing to beat or tie with Metal Sonic in the end, though not without cutting it close on most occasions. However, these defeats have only increased Metal Sonic's hatred for Sonic and endowed him with an obsession to surpass and defeat him, promoting him to repeatedly challenge Sonic in vain. At one point, Metal Sonic's hatred and obsession for Sonic pushed him over the brink, making him usurp control of the Eggman Empire to build a robot kingdom with the goal of killing Sonic. He even adopted the warped belief that Sonic was his copy and that he was the real Sonic.
While Sonic has managed to defeat Metal Sonic time and time again, he rarely condemns Metal Sonic for his villainous actions in the aftermath. Instead, he gets a satisfaction from the challenge Metal Sonic provided him with and will promise his robot double he will await their future rematches.
Knuckles the Echidna
— Sonic, Sonic Adventure 2
Knuckles the Echidna is one of Sonic's greatest rivals and best friends. They have known each other for a long time, but their relationship is somewhat complicated, the two of them having been summed up as "best frenemies." When Sonic first met Knuckles, they two of them had the worst kind of encounter, with Knuckles trying to keep Sonic from stopping the Death Egg's re-launch after being deceived by Dr. Robotnik. As such, they started off as adversaries. However, when the echidna discovered that Robotnik had tricked him, the two of them joined forces to keep Robotnik and his robots from stealing the Master Emerald, and they departed on good terms.
Because of their first impressions of each other and their personalities and competing feelings, Sonic and Knuckles did not start out as "good friends". In fact, Sonic and Knuckles are much like oil and water. While Sonic exemplifies the wind and is laid-back, cool and free, Knuckles exemplifies the mountain and is stern, serious and unmovable, which cause them to argue a lot. They share a competitive rivalry and often end up fighting when clashing, although it has become less serious in recent times, being now more of a form of slapstick between the two. With Sonic's speed equaling Knuckles' strength in every way, their fights are anything between climactic to just plain funny.
Sonic always welcomes a challenge from Knuckles. He also enjoys poking fun at Knuckles whenever he can (usually when Knuckles is serious or insightful) and will even deliberately try getting him angry so he can get a reaction out of him. From Sonic's point of view, their relationship tends to work out with him always having to bail Knuckles out of trouble. On a personal level however, Sonic also respects Knuckles for his dedication, although it also makes him want to poke fun at him even more.
Due to his lack of social abilities in the past, Knuckles used to fall for Dr. Eggman's deceiving very often, which, in turn, would be the cause of most of his confrontations with Sonic, although as time passed, the echidna has generally become more aware of Eggman's plans and has stopped believing his claims regarding Sonic. Whenever Sonic discovers Eggman has tricked Knuckles, he tends to chide him by calling him "Knuckle-head," which Knuckles does not take too well, though they always make peace with each other at the end of the day.
Despite their differences, after having several adventures together since meeting each other, Sonic and Knuckles' relationship have improved, and they have always rushed to each other's aid when they are in a pinch. The two of them are connected by a hot-blooded friendship and while they still argue and complain about each other from time to time, they are perfectly synchronized in the heat of action. 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. Also, according to Tails, Sonic and Knuckles are "funny" together.
While Sonic does not hold back on Knuckles' shortcomings, the two of them deeply acknowledge each other. Nonetheless, Sonic is still somewhat reluctant to admit when Knuckles is right and he was wrong. While Knuckles at times rebuts his help and claims he could do better, Sonic just rolls with it and is merely glad to help him. They 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" in Sonic Advance 3. Noticeably, when they do manage to work together, Sonic and Knuckles form an unstoppable team. For better or worse, Sonic will also be there to give Knuckles needed, if not harsh, consoling whenever he is in doubt. Additionally, during the Lost Hex incident, Sonic was crestfallen when he thought Knuckles and the others had died due to the Extractor.
Shadow the Hedgehog
Shadow the Hedgehog is Sonic's arch-rival. They look almost identical (to the extent that many initially got them confused), and they can match each other in speed, agility and abilities, including Chaos Control. The two of them first met each other as enemies, with Sonic holding a grudge at Shadow for getting him into trouble with GUN, but they put aside their differences to team up and save the world from Gerald Robotnik's doomsday plans. Since then, they have been both lethal adversaries and comrades. In addition, immediately before their final fight, Sonic, when explaining how he survived Eggman's earlier death trap against him, credited Shadow for "saving him" (referring to Shadow's frequent use of Chaos Control inspiring Sonic to do the same via a Fake Emerald), and also freely answered Shadow's question of who he was as "just a guy who loves adventure."
Shadow is the antithesis to all that Sonic stands for, and ever since they first met they have fought, argued, and even had outright death matches, though Sonic is never out to take Shadow's life and does not consider him an enemy in the true sense of the word. Their moral differences are as far apart as black and white, always causing the two of them to clash. Sonic has a joyful, free-spirited attitude that looks for fun adventures, while Shadow is a brooding loner with a merciless and excessively violent edge. Sonic has few limitations on his goals and will do anything to help save the world, but Shadow will stop at nothing to get what he wants, with little concern for who or what it affects. Nevertheless, they do not care of each other's views and they always see their conflicting differences as yet another reason to fight each other.
Both Sonic and Shadow share a strong rivalry. When they first met, Sonic accused Shadow of copying him, with Shadow maintaining a mutual belief regarding Sonic. This feeling is still present in both of them because each thinks he is better than the other. Regardless, their rivalry has developed over time and is now more friendly, yet still fiercely intense.
Out of all his rivals, Shadow is the one whom Sonic struggles most with. As shown in all their clashes, they are each other's equal, with both sides neither lacking in any category that separates them from skill in their respective prowess: while Sonic is becoming faster and more honed than Shadow, Shadow is becoming stronger and more destructive than Sonic, which has only increased the intensity of their rivalry. They have an unshakable need to showcase their growth and improvement for every encounter they have, and anything considered competitive is suitable for their rivalry, though Sonic usually remains more casual about it than Shadow and enjoys testing his skills against him.
Despite their differences, Sonic and Shadow share a mutual respect for each other, though this is rarely apparent because they always argue and fight. Sonic himself has acknowledged Shadow's capabilities, even admitting that Shadow is only one who would have a chance against him in a race, and after Shadow sacrificed himself to save the world in Sonic Adventure 2, he recognized him as a brave and heroic hedgehog. Sonic also appears to hold faith in Shadow's sense of right and wrong to a certain extent as seen in some of the scenarios of Shadow the Hedgehog where he would show disbelief and confusion about Shadow siding with the Black Arms, even admitting in one scenario that he did not believe Shadow had it in him for his selfish acts.
Regardless of their disagreements, they are willing to put their differences aside for the greater good, and together they are an unbeatable team. Overall, there is always extreme tension between Sonic and Shadow, but they have matured over time, with Shadow having more faith in Sonic's capabilities and Sonic becoming more tolerant of Shadow's violent tendencies.
Rouge the Bat
Sonic and Rouge the Bat do not seem to have any dislike for each other, despite the latter having antagonized Sonic's friends, notably Knuckles, on various occasions. In fact they appear to be on good terms. They were initially enemies when they first met (though they did not interact until much later), mainly because Rouge was working with Shadow and Eggman, but they became allies towards the end in order to save earth. Also after Shadow's supposed death after defeating the Finalhazard, Sonic comforted Rouge by giving her Shadow's Inhibitor Ring.
Even when antagonized by Rouge herself, Sonic has yet to hold anything against her. Most noticeably, during the Emerl incident, Rouge challenged him to a battle; if she won, he would have to get her gems and work for her. Although Sonic managed to win, he did not hold any grudge against her as seen later on. Later, Sonic even let Emerl say hello to Rouge, which suggests Sonic somehow trusts her. However, even Sonic noted during the Wisp incident that she is a shady character, suggesting that he knows he has to be careful around Rouge due to her thieving nature.
At his birthday party, Rouge was shown to be one of the attendees. Sonic likewise treated her like all of his other friends, which shows a friendly relationship between them. Additionally, Rouge would show up to motivate Sonic to defeat the Time Eater during the final battle.
Although they do get along with each other quite well, they still have been on opposing sides on a few occasions, like during the Neo Metal Sonic incident when Team Sonic and Team Dark fought in the Jungle, and during the Emerl incident when she kidnapped Emerl to train him to be a thief. He also told her that if she did something to Emerl, he would not let her off easily. Also, when Rouge was introduced to Emerl, she gave them an idea to help Emerl, but Sonic refused, calling her 'a thief'. Whether this means their friendship has grown since then or that Sonic just does not trust her completely is yet to be seen. While there is technically no hostility between the two, Sonic, along with Tails and Knuckles, displayed some noticeable disgust towards Rouge's selfishness during the second World Grand Prix where she and Shadow held no empathy for their teammate E-10000B, and exerted him past his limits in order to get the cash prize.
Cream the Rabbit
Cream the Rabbit is basically like a younger sister to Sonic. Cream similarly looks up to Sonic like an older brother. Cream also takes him as her savior and respects him a lot. She often calls him by the name of "Mr. Sonic" due to her education in manners.
In Sonic Rush, Cream marks Sonic as the first person to seek help from for Blaze. This shows the high caliber of respect Cream has for Sonic. She was also the one who made the ties between Blaze and Sonic closer.
Blaze the Cat
You need to be true to yourself.
— Sonic, Sonic Rush
Blaze the Cat is one of Sonic's friends and most valuable allies. He first met Blaze in Sonic Rush where he initially suspected that she was involved with Dr. Eggman Nega's scheme. Once he learned Blaze was working on saving the world, albeit alone, Sonic insisted to help her only to be rejected. Sonic still followed Blaze, but his insistence to aid her only made Blaze fight him to make him leave. Even while battling however, Sonic tried to reason with Blaze, who berated him with the full fury of her emotions. Afterwards, Sonic came to understand Blaze's past and he told her to be true to herself. His advice helped Blaze realize that accepting help would benefit her, and they became friends. Sonic soon after established a firm belief in Blaze, which helped restore her confidence when the Sol Emeralds lost their power and led to her first transformation into Burning Blaze. After the threat had passed and they returned home, they thanked each other and promised to meet again.
Since then, Sonic and Blaze have steadily become better friends and allies. They have developed a custom where they shake hands as they depart, signifying their growing friendship and respect, and the promise to meet once more. Sonic and Blaze are alike in many ways, having similar skills and duties, yet very different backstories and contrasting personalities: Sonic being inwardly free and adventurous, yet outwardly level-headed and cool, whereas Blaze is outwardly stoic and blunt, yet inwardly highly emotional. However, their differences does little to hurt their relationship and is later shown to mix very well as their friendship and mutual understanding grows. They are also shown to be great partners in combat, working in sync.
Sonic and Blaze share a great deal of mutual respect and trust. Like Blaze respects Sonic and his skills, Sonic acknowledged Blaze's, especially since she is one of the few who has tied with him in combat. Even shortly after befriending her, Sonic entrusted her to save Cream, while Blaze trusted him to face Eggman Nega. Also, whenever Blaze's emotions get the better of her, Sonic will be there to remind her of what is important. Additionally, Sonic is responsible for many changes in Blaze's outlook on life; their time together has enabled Blaze to discover the meaning of friendship which ultimately let her use the Sol Emeralds, and his advice helped Blaze to see her pyrokinetic powers as a gift rather than a curse.
Silver the Hedgehog
Sonic and Silver the Hedgehog first met during the events of Sonic the Hedgehog (2006). The two were enemies at first because Silver had traveled though time and was intending to kill Sonic believing that he was responsible for destroying the world by releasing Iblis onto it and was bent on saving the future. But Silver befriended Sonic when he discovered, with Shadow's help, that Sonic was not the Iblis trigger and that Mephiles the Dark had lied to him. The two worked together to save Princess Elise and when Sonic was killed by Mephiles, Silver realized that they could save Sonic with the power of the Chaos Emeralds. Afterwards Silver teamed up with Sonic and Shadow to defeat Solaris. But since the events of the game were erased from history, Sonic and Silver never met. In their new meeting in Sonic Rivals, Silver had traveled to the past to bring Eggman Nega back to the future, but he seems to be more competitive to Sonic as they raced each other see who would get to Eggman Nega first but later they teamed up with each other at the end to defeat Eggman Nega and also in Sonic Rivals 2 to defeat the Ifrit.
Silver seems to have a bit of a disliking towards Sonic mostly because he thinks that he is cheeky and foolish, much the same how Shadow thinks of Sonic at times. Sonic seems to dislike Silver as well, mainly because he found Silver and his haughty attitude annoying, and an example of this is seen in Sonic Rivals when he says, "Yo Silver, you're starting to get on my nerves". But they will work together and lay aside their differences whenever the time is right. An example is in Sonic Colors after Silver challenges Sonic to a mission, he asks if he needs any help. By the events of Sonic Generations Sonic's relationship with Silver seems to have improved and is now a lot friendlier, and they seem to no longer hold any kind of dislike for each other. After Silver is convinced that Sonic is the real Sonic and not an imposter, Silver happily hands over his Chaos Emerald and, later, gladly accepts Sonic's challenges to a rematch, claiming that it should be fun. He also appeared at the Center of Time after Sonic was knocked out by the Time Eater, Silver says to Sonic: "I know you can do this Sonic!". They are even more friendlier in Sonic Forces, where they work together to reclaim the world from Eggman's reign.
Dr. Eggman Nega
Dr. Eggman Nega is another adversary of Sonic. When Sonic first met Eggman Nega, Sonic displayed an enmity towards him, as he was constantly chasing him for a while before managing to defeat him later.
— Sonic, Sonic the Hedgehog (2006)
Sonic and Princess Elise the Third had a very close relationship with each other, and they shared a strong bond. Mephiles was aware of this, and decided to take advantage of it, so he killed Sonic which caused Elise to cry, which freed Iblis. Elise later revived Sonic with the Chaos Emeralds, kissing him as he awakens as Super Sonic. Sonic was very grateful towards Elise, thanking her with a hug. After the defeat of Solaris, Sonic and Elise found Solaris in its frail, core form. She theorized that by putting out the flame now, Solaris would have never existed, which would make it so that she would never have met Sonic. Elise nearly broke down and declared that she did not care what happened to the world, but Sonic simply reminded her to smile, convincing her to be brave and blow out Solaris. This event instantly resulted in a time reboot. In the aftermath, Sonic watched the Festival of the Sun in the distance as Elise sensed something familiar about his presence.
Marine the Raccoon
Marine the Raccoon is a good friend of Sonic from Blaze's world, as they quickly befriended each other soon after meeting. When making herself captain, Marine declared Sonic one of her assistants despite Sonic never agreeing to it. Sonic was likewise genuinely annoyed by Marine's antics, her bossy behavior, and the way she insisted that he followed her orders. Though Marine would get jealous at Sonic for tackling their more dangerous enemies, she admires his skills and marked him as her "best pupil" and deputy captain. Despite this, Sonic was willing to endure it, as he often noted how "hopeless" a case Marine was.
When Marine learned that Sonic thought of her as a nuisance, she felt betrayed and called him stupid. They later made up though when Marine stopped bossing Sonic around. When Sonic later departed Marine's home with Tails, Marine earned his respect with a newfound sense of maturity and told him how he and Tails were the best friend ever. Though she cried at Sonic's departure, she vowed to meet him and Tails again no matter the boundaries.
When Sonic first met Shahra, she asked for his help so that he could save her world from the Erazor Djinn. While Sonic agreed to help, he could only go into Shahra's world on one condition; he had to wear a ring and have her serve as his wish granter. Although Shahra was bound to treat Sonic as his master from then on and would refer to him "Master" on several occasions after that, Sonic would feel uncomfortable about this title and insist that she referred to him by his real name.
Like his other allies, Sonic would go to great lengths to keep Shahra safe. This led him to take the shot from Erazor Djinn's Flame of Judgment curse when he tried to cast it on Shahra. With the curse slowly burning away Sonic's life force, Shahra regretted getting Sonic involved in her world's affairs. Not wanting Shahra to feel sad, Sonic promised her with a pinky swear that he would have her smiling at the end of this adventure, not as her master but as a friend.
Throughout their adventures, Sonic would often annoy Shahra with his reckless behavior and easy-going attitude. Nevertheless, they were never apart from one another, and Sonic often received helpful advice from Shahra. Also, while Sonic was curious about Shahra's relationship with the Erazor Djinn, he respected Shahra's privacy enough to not press her for details when she was reluctant to reveal it. Regardless, towards the end of their adventure, the two of them had build up a relationship of great trust, enough for Shahra to tell Sonic about her own wish: for the Arabian Nights to go back to the way they were.
When the time came to face Erazor, Sonic, much to his shock, saw Shahra force herself to obey Erazor. Refusing to let Shahra go through with this and let her wish be in vain, Sonic commanded her, as her master for the first time, to "do what you truly think is right". This caused Shahra to faint. When Shahra later took a lethal blow from Erazor to protect Sonic, Sonic assured her in her final moments that he held no ill will against her for bringing him into this mess in spite of what she thought herself. Later, Sonic forced Erazor to revive Shahra with the first of the three wishes he was forced to grant him, hinting that he prioritized Shahra before anything else. After then sealing Erazor away, which made Shahra cry, Sonic wished for a mountain of handkerchiefs so she could cry for as long as she needed to.
— Darkspine Sonic, Sonic and the Secret Rings
Sonic has been enemies with the Erazor Djinn ever since he found out that the Djinn had been erasing the pages of the Arabian Nights. Being against any form of evil, Sonic tried to stop him from carrying out his ambitions.
When meeting him, Sonic casually treated Erazor like any other power-hungry despot he had faced by showing no fear of him and teasing him with his carefree banter. However, he came to dislike Erazor greatly for constantly calling him a rat, and would attempt again and again to remind him that he was a hedgehog. Meanwhile, Erazor initially just saw Sonic as an insignificant vermin. However, when Sonic took the Flame of Judgment for Shahra in their first encounter, Erazor decided to use Sonic and told him to gather the seven World Rings for him before the Flame of Judgement burned out, or he would die.
Throughout their subsequently encounters, Sonic would casually ask Erazor to remove the curse he had place on him while both teasing him and maintaining his bravado in the face of the Djinn's malice. When Sonic finally arrived with the World Rings however, Erazor betrayed him, and attempted to kill him to gain full access to the World Rings' power. After defeating Erazor, Sonic, using Erazor's Magic Lamp, wished for Erazor to bring Shahra back to life, restore the Arabian Nights, and spend eternity trapped in his lamp, all of which Erazor has no choice but to do. Sonic also showed disappointment in Erazor as he got dragged into his lamp while begging for Shahra to help him.
Knights of the Round Table
When Sonic and the Knights of the Round Table first met, they started off as enemies, as the formers where ordered to slay Sonic on sight by King Arthur. However, Sonic's adversarial relationship with the group came to an end when he gained their respect, and when they realized Arthur was a fake. Individually, Sonic would often make comparisons to their counterparts, and kept a casual, yet vigilant attitude around them.
When Sonic first met Sir Lancelot (the alternate reality doppelgänger of Shadow), who challenged him to a duel, Sonic displayed an attitude similar to the one he shows towards Shadow; a competitive, but fierce demeanor. Despite this, Lancelot had a small degree of respect for Sonic, as he respectfully acknowledged him as a worthy adversary.
Sir Gawain (the alternate reality doppelgänger of Knuckles) held an inhospitable attitude towards Sonic, and accused him of trying to steal a dragon's treasure before attempting to slay Sonic. Sonic however, was reluctant to fight Gawain since he was in a hurry to save some villagers, and would admit out loud that he was a knucklehead, much like Knuckles. Regardless, Sonic later stopped Gawain from committing suicide. Sonic would then slightly open Gawain's eyes to new possibilities when he asked him if their was more to being a knight then serving a king.
Initially, Sir Percival (the alternate reality doppelgänger of Blaze) was another adversary of Sonic. However, it was not until Sonic came after her sword that they met. In comparison to the other knights, Percival was the only one who showed Sonic respect from the beginning. She then challenged him, under the name "Sir Sonic, Knight of the Wind", being the first person to call him that. After Sonic defeated her, Percival fell off a ledge, but was saved by Sonic. Although Percival was confused by Sonic's act of chivalry, she nonetheless did not object to this. Percival would later repay Sonic's kindness by being the first of the Knights of the Round Table to show faith in him when he came to them with news about their king.
Chip (also known as Light Gaia) is a dear and good friend to Sonic. When Chip first saw Sonic, he was afraid of his Werehog form, but he soon realized he was a good guy. When Sonic then told Chip that he would help him recover his memories, Chip quickly took a liking to Sonic and thanked him wholeheartedly. In addition, Chip subconsciously felt kindness in Sonic and wanted him to help him.
Chip spent most of his time next to Sonic, and soon formed a great friendship with him. Chip also enjoyed participating in friendly competitions with Sonic, like when they fought for the last dumpling in Chun-nan. However, Chip was sometimes a nuisance to Sonic due to his naive frankness would occasionally annoy him, although he never had a bad intention. Also, when he accidentally caused Sonic to become depressed with his Werehog form, Chip tried to cheer him up.
After recovering his memories, Chip was deeply grateful to Sonic for everything he had done for him. However, he did not want Sonic to get involved in his conflict with Dark Gaia and he tried to leave. However, Sonic persuaded him to help him anyway, and Chip thanked him. During his battle with Dark Gaia, Chip prioritized Sonic's well-being whenever he was weak, such as when he was weakened by the loss of Dark Gaia energy or when he fell unconscious after defeating Perfect Dark Gaia. When the last continent fell and they had to leave, Chip gave him a goodbye before returning him to the surface. There, Chip contacted Sonic telepathically, telling him that he would never forget him and that he would always be with him.
Jet the Hawk
Even without wings, I can still fly! ...right?
— Sonic, Sonic Riders
Sonic has been rivals with Jet the Hawk since they first met, and their dynamic relationship is based on their competitive nature and distinct respect for one another. In their first meeting, Sonic lost to Jet in an Extreme Gear chase, but rather than being upset, Sonic eagerly recognized him as a worthy new rival.
Early on, Sonic's rivalry with Jet was rather one-sided, and Jet would often anger Sonic with his constant mockery of him. Nevertheless, Sonic recognized Jet's skills as an Extreme Gear rider and kept a professional, yet competitive, attitude around him. Eventually, Sonic settled his own dispute with Jet after he beat him in a race. Soon after, they would establish a more friendly relationship based on mutual respect, and promised each other to compete again later, though they still remain firm rivals.
Despite their rivalry, Sonic and Jet are willing to put aside their differences when a greater threat is present. In fact, they have teamed up on a few occasions.
Since defeating Jet, Sonic has kept a more relaxed and tolerant attitude towards Jet, taking his insults and rash determination to beat him in stride. Nevertheless, their rivalry remains as strong as ever, and Sonic will gladly, if given the right opportunity, race him for fun. However, even when determined to beat Jet, Sonic does not wish to have any unfair advantages, and will give Jet the chance to race him at his best. Despite how many times they face each other, their rivalry has seemingly no end in sight, although Sonic always looks forward to his next rematch with Jet.
The Deadly Six
When I get my hands on you guys...
— Sonic, Sonic Lost World
The Deadly Six are some of the worst enemies Sonic has ever faced. Unlike his past foes whom he has never viewed as actual enemies, the Deadly Six are the only ones Sonic has shown true contempt for.
Sonic first met the Deadly Six while they were under Eggman's control, where he treated them with confident mockery like any foe. However, when Sonic recklessly got rid of the Cacophonic Conch used to control the Deadly Six, they rebelled and planned to destroy the world, making Sonic responsible for the subsequent danger to the planet. As such, Sonic set out to stop them with more seriousness. He soon grew extremely hostile towards them when they captured Tails, an act of which made Sonic lose his cool for once. As he sought to save Tails, Sonic threatened the Deadly Six with aggressiveness and spite which only intensified as Zavok taunted him with his plans to roboticize Tails and his friends' apparent deaths. By the time of their final showdown, Sonic was thoroughly tired of them and threatened them aggressively when he thought they had turned Tails into a robot. In the end though, Sonic defeated the Deadly Six and got Tails back, redeeming himself and proving himself the hero he is.
When encountering Zavok again (or rather, his replica) aboard the Death Egg, his demeanor towards him was more laid back, as evidenced by Sonic engaging in his usual confident mockery towards Zavok both prior to and immediately after the fight.
Sonic is shown to be on very good terms with Classic Sonic. When they first met during the Time Eater incident, they were left somewhat confused about standing face-to-face with another one of themselves, although they put that aside to sort out the crisis at hand. After that, they quickly forged a bond based on their common interest in the adventure they faced together.
Due to having so many things in common with each other, Sonic and Classic Sonic have demonstrated great collaboration and teamwork in battle. Overall, Sonic and Classic Sonic share a great degree of mutual respect and admiration for each other, and Sonic seems to enjoy teaching Classic Sonic techniques he has yet to learn, such as the Homing Attack and the Boost.
— Sonic, Sonic Forces.
Sonic first encountered Infinite in the City, where he was beaten easily by the mysterious henchman of Dr. Eggman. Later, when encountering Infinite at Mystic Jungle and had his first formal meeting with Infinite, Sonic dismissed the latter's insinuation that his sweat was due to fear and explained he ran all the way to the location to save Silver, and also proceeded to smugly explain to Infinite that the latter failed to leave an impression on him at all despite the earlier beating, not even knowing his name. Upon learning it, however, Sonic, in his trademark banter, then tried to get Infinite to reveal the secret to his power, although Infinite refused to divulge the ability. He also expressed some annoyance at the latter's reference to him as a "sewer rat." Although he managed to do much better against the enigmatic warrior than before, he still ultimately lost the battle due to Infinite's powers. Ultimately, he alongside the Avatar managed to defeat Infinite for good at the Eggman Empire Fortress, with him also telling Infinite that the reason he lost was because he and his replicas lacked heart, soul, and the bonds of friendship.
Here goes, partner! When we join forces, the sky's the limit!
— Sonic, Sonic Forces.
Sonic met the Avatar after the former escaped from the Death Egg and latter having arrived with a shuttle to rescue him. Together they proceeded to team up on various missions. He ultimately inspired the Avatar to not give in to their fear against Infinite. Likewise, the Avatar was shown to be loyal to Sonic, making an attempt at saving him from the Null Space, and ultimately succeeding, despite being sucked in with him. After the war was over, Sonic suggested they would see them around when the Avatar went their own way and took their leave from the Resistance after it was disbanded.
- Miles "Tails" Prower (best friend and sidekick, close as brothers)
- Knuckles the Echidna (best friend and rival)
- Amy Rose (good friend)
- Big the Cat
- Cream the Rabbit
- Shadow the Hedgehog
- Rouge the Bat
- E-123 Omega
- Vector the Crocodile
- Espio the Chameleon
- Charmy Bee
- Mighty the Armadillo
- Ray the Flying Squirrel
- Bean the Dynamite
- Bark the Polar Bear
- Lumina Flowlight
- Blaze the Cat (close friend)
- Coconut Crew
- Marine the Raccoon
- Silver the Hedgehog
- E-102 Gamma
- Vanilla the Rabbit
- The President
- Princess Elise
- Ali Baba
- Sinbad the Sailor
- King Shahryar
- King Solomon
- Knights of the Round Table
- Shade the Echidna
- Professor Pickle
- Chip (good friend)
- Professor Pickle's Assistant
- Classic Sonic
- Classic Tails
- Avatar (partner)
- Dodon Pa
- Shadow the Hedgehog (arch-rival)
- Knuckles the Echidna (friendly rival)
- Silver the Hedgehog
- Jet the Hawk (in speed)
- Metal Sonic
- Eggman Empire
- Fang the Sniper
- Dr. Eggman Nega
- Captain Whisker
- Mini & Mum
- Black Arms
- Babylon Guardian
- Erazor Djinn
- Dark Gaia
- King Arthur
- Classic Eggman
- Time Eater
- The Deadly Six
- Masato Nishimura on Twitter (Japanese). Twitter (9 July 2017). Retrieved on 6 December 2018.
- Sonic Channel (Japanese). Characters: Sonic. Sega. Archived from the original on 26 May 2019. Retrieved on 3 July 2015.
- Sonic the Hedgehog Technical Files
- Media:CS S US.png
- Pedigree Books (August 2013). "Sonic's Count the Rings Time Trial". Sonic the Hedgehog Super Interactive Annual 2014. Pedigree Publishers. p. 9. ISBN 978-1908152077. "Fact: Sonic hates lies and always searching for the truth!"
- Devra Newberger Speregen (2016). Sonic: The Ultimate Character Guide. Scholastic. p. 7. ISBN 978-1338033243.
- Sonic to Shadow before battling him after Final Rush.
- "Profile: Sonic". Sonic the Hedgehog Super Interactive Annual 2014. Pedigree Books. 17 September 2013. p. 14. ISBN 978-1908152077. "Sonic's birthday is June 23rd and he was born on Christmas Island."
- Devra Newberger Speregen (September 2016). "5: Sonic's Friends and Foes!". Sonic: His Amazing History!. Scholastic. p. 55. ISBN 978-1338033236. "BIRTHDAY: June 23"
- Sonic the Hedgehog GameTap Retrospective at YouTube
- Sega Visions Interview with Yuji Naka (October 1992). Archived from the original on 28 September 2007 accessdate=28 July 2007.
- Yuji Naka / 中 裕司 on Twitter (Japanese). Twitter (24 January 2021). Archived from the original on 24 January 2021. “悔しいのでもう一度挑戦しましたがもっと判らなかった感じです。「セガの看板キャラクターであるソニック。世に出る前に彼に付けられていた名前を選べ」と言う問題が判りませんでした。作った人なのにね
- Sonic the Hedgehog – Developer Interview Collection. Retrieved on 19 May 2018.
- Brandon Sheffield. Out of the Blue: Naoto Ohshima Speaks. Gamasutra. Retrieved on 2009-12-13.
- Yahoo Playback. Yahoo Playback #94. Yahoo, Inc.. Retrieved on 2009-12-13.
- Brian Ashcraft. Sonic's Shoes Inspired by Michael Jackson. Kotaku. Retrieved on 2009-12-13.
- Revealed: Why Sonic can't swim (February 2009). Retrieved on 2009-02-27.
- Masato Nakamura interview (flash). Sonic Central. Retrieved on 2006-02-07.
- Sega Video Game Illustrations. Nippon Shuppan Hanbai (Deutschland) GmbH. 1994. ISBN 3-910052-50-9.
- Yuji Naka / 中 裕司 on Twitter (Japanese). Twitter (23 June 2020). Archived from the original on 23 June 2020. Retrieved on 27 January 2021. “Happy birthday Sonic!! 今日でソニックも29周年ですね。 6月23日をソニックの誕生日って僕が決めたのですが、今思うと色々と気になります。 ソニック誕生日にソニックナノブロックが届きました。 日本では今週映画ソニック公開で楽しみです。 みなさんソニックを長く愛してくれてありがとうございます”
- Sega of America. Sonic the Hedgehog. Sonic Characters. Sega of America. Archived from the original on 5 March 2005. Retrieved on 26 October 2017. “Like the wind Sonic never stands still and is always on the move. Sonic is cool under pressure, particularly when faced with his arch enemy, Dr. Eggman. He thinks that saving the world is no big feat, and he always protects and fights for the underdog. Sonic hates boredom and is constantly looking for his next adventure. Sonic lives and dies by his own rules. He never thinks twice about what others think or say; he is driven by his own sense of justice and fair play. Sonic was born to run and loves to cover as much ground as fast as he can. His demeanor is always cool and calm. When he finds himself in a pinch, he acts as though no thing can stop him When faced with a serious situation, Sonic bears down on the task at hand, focused on the challange.”
- Sonic Heroes (PlayStation 2) North American instruction manual, p. 4.
- Shadow the Hedgehog (PlayStation 2) European instruction manual, pg. 5
- Super Smash Bros. Brawl (2008). In-game description of the "Sonic" trophy.
- Sonic Unleashed (PlayStation 3) European instruction manual, p. 9.
- Sumo Digital (23 February 2010). Sonic & Sega All-Stars Racing. PlayStation 3. Sega. Area/Level: Character Select screen. "Sonic the Hedgehog's profile card: Sonic is the world's fastest hedgehog, capable of running at the speed of sound (768 mph). His other abilities include a “Spin Attack”, a “Spin Dash” and his “Super Sonic” transformation which makes him indestructible and gives him the gift of run-flight. Sonic is not an expert swimmer, but is fearless – even of Dr. Eggman. Alongside his best friend Tails, Sonic runs around the world stopping Dr. Eggman's schemes."
- Sonic Runners. Sega. Retrieved on 20 February 2015.
- Sonic Generations (PlayStation 3) European instruction booklet, p. 5
- SEGA (23 June 2016). Mario & Sonic at the Rio 2016 Olympic Games Wii U. Nintendo. Area/Level: Collectibles (Flags). "A blue hedgehog with a penchant for high speed, Sonic is a free spirit with a love for adventure. He despises anything that is unfair and will get intro trouble to help anyone in need. For Sonic, saving the world is just another thrilling episode in his life."
- Sega of America. Sonic Q and A. Sega of America. Archived from the original on 13 June 2004. “Jake B.: Which bad guy is the biggest pain in your neck? Dr. Eggman, Metal Sonic, Shadow the Hedgehog, Other? / Sonic: Well I really don't consider any of these guys my enemy in the true sense. Dr. Eggman has always found a way to make life an adventure for me and I love spoiling his evil plans. As for Shadow and Metal Sonic, I just enjoy testing my skills against them too. You know me, I love adventures!”
- Sonic and the Secret Rings
- Sonic the Hedgehog Technical Files
- Sonic Team, Dimps (November 12, 2010). Sonic Colors. Nintendo DS. Sega. Area/Level: Sweet Mountain. "Sonic: Heh! That was barely a warm-up! / Silver: Not half bad, Sonic. / Blaze: You're even sharper now than when we last met."
- Sonic Team (November 7, 2017). Sonic Forces. Nintendo Switch. Sega. Area/Level: Mystic Jungle: Vs. Infinite. "Infinite: Impossible! Your abilities exceed your previous data! / Sonic: Unlike mechs, I can grow. I get more powerful every second! / Infinite: I will teach you to hold that tongue next time we meet. You can count on it."
- Sonic Rivals (PlayStation Portable) United States instruction booklet, p. 8.
- Sega of America. Sonic Q and A. Sega of America. Archived from the original on 13 June 2004. “From Your Ultimate Fan: How fast can you go (MPH) and how long would it take you to run around the world once? Also, who could beat you in a race, Knuckles, Tails, Shadow, Cream, Rouge, Amy or Dr. Eggman? / Sonic: I have the ability to instantly accelerate to the speed of sound. That's about 760 MPH at 59*F...pretty fast, huh? The only character that would really have a chance against me would be Shadow…but then again, I've never lost a race!”
- Sonic Team (February 6, 2004). Sonic Heroes. PlayStation 2. Sega. Area/Level: Opening (Team Sonic)
- Sonic Unleashed (PlayStation 3) European instruction booklet, pg. 12.
- Sonic Adventure (Dreamcast) North American instruction manual, p. 18.
- Audureau, William; Petronille, Marc (1 January 2013). The History of Sonic the Hedgehog. UDON Entertainment. ISBN 978-1926778563. "During the day, he was his usual self, able to run anywhere at the speed of light; but at night, he became a slow and savage "werehog", prone to giving his enemies violent smackdowns."
- "Profile: Sonic". Sonic the Hedgehog Super Interactive Annual 2014. Pedigree Books. 17 September 2013. p. 8. ISBN 978-1908152077. "Sonic runs faster that the speed of light and according the Guinness Book of Records, he is officially the fastest video game character of all time!"
- Sonic Team, Dimps (November 12, 2010). Sonic Colors. Nintendo DS. Sega. Area/Level: Asteroid Coaster. "Sonic: Too Easy! / Omega: Data 130% higher than previous entry. Suspected error... / Tails: Nice run, Sonic! / Omega: Impossible... At this rate, light speed will be exceeded. / Sonic: Light speed? That's small time. There's no challenge! / Omega: Does not compute..."
- Sonic Rivals 2 (PlayStation Portable) United States instruction booklet, pg. 7.
- Sonic's Side Smash, Super Smash Bros. Brawl
- Sonic Team (November 19, 1993). Sonic the Hedgehog CD. Sega Mega-CD. Sega. Area/Level: Credits.
- Sonic Team (March 13, 2009). Sonic and the Black Knight. Nintendo Wii. Cutscene: World Destruction.
- Sonic Team (4 November 2011). Sonic Generations. PlayStation 3. Sega. Cutscene: The Final Battle!.
- Sonic Team (November 19, 1993). Sonic the Hedgehog CD. Sega Mega-CD. Sega. Area/Level: Opening sequence.
- Sonic Battle (Game Boy Advance) European instruction booklet, p. 3.
- Sonic Team, Sonic Team USA (27 February 2004). Sonic Battle. Gameboy Advance. Sega. "Sonic Flare: Sonic's heavy attack. He performs a Downward Kick using break dance moves, which knocks opponents away."
- Super Smash Bros. for Nintendo 3DS and Wii U
- Sonic Riders: Zero Gravity (Wii) European instruction booklet, p. 4.
- Sonic's Up Throw, Super Smash Bros. Brawl
- Sonic Team (20 February 2007). Sonic and the Secret Rings. Wii. Sega. Level: Dinosaur Jungle. "Sonic: Uhh. My quills are starting to tingle..."
- Sonic Unleashed (Wii/PlayStation 2)/Sonic Generations (Console/PC)
- Sonic Team (November 15, 2005). Shadow the Hedgehog. GameCube. Sega. Area: Westopolis. "Sonic the Hedgehog: To swap your weapon for another weapon that's on the ground, just press the X Button! Personally, I wouldn't be caught dead using those things!"
- Sega of America. Sonic Q and A. Sega of America. Archived from the original on 13 June 2004. “Darrell C: Why did you change your shoes in Sonic Adventure 2 Battle? / Sonic: Those were special shoes that were specifically made for grinding. It was something that I've always wanted to try and it sure came in handy! Look forward for some more intense and extreme grinding in my next adventure, Sonic Heroes.”
- Sonic Team. Super Sonic's official character profile from Sonic Team (Japanese). Sega of America. Archived from the original on 2008-07-01. Retrieved on 25 June 2008.
- Sonic Team (9 December 2008). Sonic Unleashed. PlayStation 3. Sega. Level/Area: Adabat. "Brenda: Is there anything you CAN'T do, Sonic? Any weaknesses? [Answer is revealed to be "I can't swim."] Great! What a scoop! This matches all my other data perfectly!"
- Sega of America (February 2004). Sonic Central. Sega of America. Archived from the original on 24 January 2004. “Sega.com: Sonic sure is busy -- how many hours of sleep does he need per night? / Yuji Naka: Hmm, I suppose he sleeps the ordinary eight hours a night or so, because unless he sleeps well, lack of sleep will affect his run...”
- Black, Fletcher (14 November 2006). "Cast". Sonic the Hedgehog: Official Game Guide. Prima Games. p. 5. ISBN 978-0761555100.
- Sonic Colors (Nintendo DS) United Kingdom instruction booklet, p. 3-4
- Sonic Generations (PlayStation 3) instruction manual, pg. 6
- Sonic the Hedgehog (Sega Mega Drive) Japanese instruction manual, pg. 7-10.
- Sonic Team, Devil's Details (November 4, 2011) Sonic Generations. PC. Sega. Level/Area: Egg Dragoon. "Sonic: No, seriously, we beat this guy every time. It's like it's our job or something!"
- Sonic Team (October 18, 2013). Sonic Lost World. Wii U. Sega. Level/Area: Tropical Coast. "Sonic: Pfft, yeah well, teaming up with you feels like the end of the world, Eggman. I'm gonna want to take a long shower by the time we're done."
- Prima Development (20 June 2001). "Dr. Robotnik, a.k.a. Eggman". Sonic Adventure 2: Prima's Official Strategy Guide. Prima Games. p. 3. ISBN 978-0761536147.
- Sega of America (February 2004). Yuki Naka on Sonic's Past, Present, and Future part 2. Sega of America. Archived from the original on 24 January 2004. “Sega.com: Did Sonic have a hand in changing Dr. Robotnik's name to Dr. Eggman for the United States games? If so, was he trying to make fun of his nemesis? / Yuji Naka: To tell the truth, his name has not changed. Robotnik is his real name and Eggman is a common name taken after his shape. Possibly, it may have been Sonic, who uttered this alias for the first time! I feel, though, Sonic uses this name affectionately rather than trying to make fun of the doctor.”
- Sonic the Hedgehog 2 (Sega Mega Drive) Japanese instruction manual, pg. 4-8.
- Sega of America. Miles "Tails" Prower. Sonic Characters. Sega of America. Archived from the original on 5 March 2005. Retrieved on 26 October 2017. “Tails is a young fox that has a knack for building things. He's as talented as Dr. Eggman, but has yet to discover the true potential of what he really can accomplish. Sonic has taken Tails under his wing and treats him like a younger brother. Tails wants to prove to Sonic that he's someone to be counted on. Besides his ability to fly using his twin tails, he has become an experienced pilot with the "Tornado," a plane that Sonic helped him build. Tails' fearless character and natural talent with mechanical devices come in handy to help Sonic out of danger.”
- Sonic Team (March 13, 2009). Sonic and the Black Knight. Nintendo Wii. Gallery. Vault 5. [Blacksmith] "His real name is Miles Prower. His nickname is Tails. As Sonic's protégé, he loves to tink with gadgets. He is only 8 years old."
- Sega of America. Sonic Q and A. Sega of America. Archived from the original on 13 June 2004. “JamMai6: Have you ever wished you had a brother? I don't mean Shadow. / Sonic: Well I actually have a little "adopted" brother in Tails. He and I go way back! Ever since I stopped the bullies from teasing him about having two tails, he's been like my shadow, following me on every adventure. He's a really cool inventor and has mad mechanical skills to boot!”
- Sega. ソニック ＆ テイルス (Japanese). Sonic Channel. Archived from the original on 22 December 2020. Retrieved on 23 December 2020.
- Sonic Heroes (PlayStation 2) North American instruction manual, pg. 5
- Sonic Team (10 November 2010). Sonic Free Riders. Xbox 360. Sega. Area/Level: Dolphin Resort. "Tails: Just make sure you take enough time to tune up your Gear, okay, Sonic? You always leave all the tech work to me. / Sonic: Heh, well of course! I know you'll do it better than anybody else!"
- Sonic Adventure (Dreamcast) North American instruction booklet, p. 24.
- Sega of America. Amy Rose. Sonic Characters. Sega of America. Archived from the original on 5 March 2005. Retrieved on 26 October 2017. “Once Sonic saved Amy from the clutches of Dr. Eggman in Sonic CD, the two became fast friends. Amy is graceful and powerful at the same time and though she often gets into trouble, she is stronger than most give her credit for. She has a big crush on Sonic and wouldn't mind if they became more than friends, but Sonic is too busy saving the world to think about having a girlfriend, let alone a wife and kids! With her Piko Piko Hammer and Tarot Cards, Amy has proven herself a valuable member of Sonic's team.”
- Character Introduction: Hero/ characters for 2P battle. Archived from the original on September 27, 2011. Retrieved on November 30, 2014.
- Sonic Advance 3 (Game Boy Advance) North American instruction booklet, pg. 16.
- Sonic Heroes (PlayStation 2) North American instruction booklet, pg. 8.
- Sonic Team, Sonic Team USA (18 June 2003). Sonic Adventure DX: Director's Cut. Nintendo GameCube. Sega. Area/Level: Station Square. "Sonic: I give up! She's so weird!/Ugh, that girl is such a pain!"
- Sega of America. Sonic Q and A. Sega of America. Archived from the original on 13 June 2004. “Dudenc2: Hey Sonic, who is a better friend, Amy Rose, Cream, Knuckles, or Tails? / Sonic: They're all my friends…I like them all, but that Amy sure can be a pain…sometimes or should I say most of the time!”
- Sonic Riders: Zero Gravity (Wii) United Kingdom instruction booklet, pg. 6.
- Sega. ソニック ＆ エミー (Japanese). Sonic Channel. Archived from the original on 22 February 22 2021. Retrieved on 24 February 2021.
- Sonic Heroes (PlayStation 2) North American instruction manual, p. 8.
- Prima Development (20 June 2001). "Amy Rose". Sonic Adventure 2: Prima's Official Strategy Guide. Prima Games. p. 3. ISBN 978-0761536147.
- Sonic Team (9 December 2008). Sonic Unleashed. PlayStation 3. Sega. Area/Level: Spagonia:"Amy Rose: I still can't believe it's you inside that... THING. But! No matter the package, you're still my Sonic, Sonic!"
- Sega of America. Metal Sonic. Sonic Characters. Sega of America. Archived from the original on 5 March 2005. Retrieved on 26 October 2017. “Metal Sonic was created by the evil genius, Dr. Eggman, and is one of Sonic's earliest foes. He is modeled with extreme accuracy after our blue hero, giving him the ability to predict Sonic's moves and match his great speed. The red-eyed Badnik first appeared in Sonic CD in 1993.”
- Sonic the Hedgehog CD (Sega Mega-CD) Japanese instruction manual.
- Backbone Entertainment, Sega Studio USA (December 7, 2007). Sonic Rivals 2. PlayStation Portable. Sega. Level/area: Neon Palace Zone. "Sonic: I got a bad feeling about this, Tails! Whenever Metal Sonic's involved, it always means trouble!"
- Backbone Entertainment, Sega Studio USA (December 1, 2006). Sonic Rivals. PlayStation Portable. Sega. Level/area: Death Yard Zone. "Sonic: What, that lame robot copy of yours again? You really need to get a hold of some better toys, you know. / Eggman: Heh heh heh... The previous Metal Sonic was able to capture data from your last match... Data I was able to recover! I've already upgraded this new model with that data so that it'll be wise to your little tricks. This time, it's YOU who's going to get sent to the junkyard, Sonic! / Sonic: A copy is still just a copy! It'll never be able to top the original!
- 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."
- 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.
- Sega of America. Knuckles the Echidna. Sonic Characters. Sega of America. 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.”
- Sonic Advance 3 Japanese website (Japanese). Retrieved on 1 May 2015.
- Sonic Team (February 6, 2004). Sonic Heroes. PlayStation 2. Sega. Area: Final Fortress. "Knuckles: Boy, talk about cutting it close... / Sonic: Eeh, not really. / Knuckles: Come on, tell me you weren't scared. If it wasn't for us, you wouldn't of had a chance! / Sonic: Well, maybe you're right. Thanks Knuckles.
- Sonic Heroes (PlayStation 2) North American instruction manual, pg. 6.
- Shadow's Profile, Shadow the Hedgehog
- Sonic Team (March 13, 2009). Sonic and the Black Knight. Nintendo Wii. Gallery. Vault 5. [Lancelot] "His real name is Shadow the Hedgehog. He is a black hedgehog and he is is fast like Sonic. Though Sonic's rival, he is also a comrade."
- Sonic Team (May 3, 2002). Sonic Adventure 2: Battle. GameCube. Sega. "Shadow the Hedgehog: You never cease to surprise me blue hedgehog. I thought that the capsule you were in exploded in space. / Sonic the Hedgehog: You know, what can I say... I die hard! You actually saved me, you know. / Shadow the Hedgehog: It was a Chaos Emerald, wasn't it? But, there's no way you could have activated the Chaos Control using an Emerald that was fake. So, there's more to you than just looking like me. What are you anyway? / Sonic the Hedgehog: What you see is what you get! Just a guy who loves adventure! I'm Sonic the Hedgehog!"
- "Shadow is an artificial life form, created by Dr. Eggman's grandfather. His initial hatred of Sonic has now developed into a friendly rivalry", Sonic & Sega All-Stars Racing.
- Sonic Team, Dimps (November 12, 2010). Sonic Colors. Nintendo DS. Sega. Area/Level: Asteroid Coaster. "Shadow: I'm happy to leave the racing around all day to them, thanks. / E-123 Omega: Unable to process. According to data, your ability equals Sonic's."
- Sonic Central: Since Shadow is Sonic's enemy, what does this game mean for Sonic? Is he your main enemy in this game? How does Robotnik fit into things? / Sonic Team: Shadow is more of a nemesis to Sonic rather than a true enemy; they may be adversaries but there is a mutual respect between the two of them.
- Sonic Team, Sonic Team USA (May 3, 2002). Sonic Adventure 2: Battle. Nintendo GameCube. Sega. Area/Level: Finalizard. "Sonic: Shadow, I understand. You're unstoppable. Let's destroy this creature now! Everyone is waiting for us back on earth!"
- Sonic Team, Sonic Team USA (May 3, 2002). Sonic Adventure 2: Battle. Nintendo GameCube. Sega. Area/Level: Ending sequence. "Rouge: Do you really think... that the professor created Shadow to carry out the revenge on all those who live there, on earth? / Sonic: He was what he was. A brave and heroic hedgehog, who gave his life to save his planet. Shadow the Hedgehog..."
- Sonic Team, Sega Studios USA (November 18, 2005). Shadow the Hedgehog. PlayStaion 2. Sega. Area/Level: Sonic and Diablon (Final Haunt). "Sonic: Shadow! Why are you siding with those black creature?! / Shadow: Siding with them? You're joking, right? I'm just siding to whoever goes up against you . This time, you're going down, Sonic! / Sonic: If that's how it's gonna be, Shadow, then bring it on! / Shadow: Just say when"
- Sonic Team, Sega Studios USA (November 18, 2005). Shadow the Hedgehog. PlayStaion 2. Sega. Area/Level: Sonic and Diablon (Black Comet). "Shadow: Finally... I've got ALL the Chaos Emeralds! / Sonic: Shadow... Why... why are you siding with them?"
- Sonic Team, Sega Studios USA (November 18, 2005). Shadow the Hedgehog. PlayStaion 2. Sega. Area/Level: Sonic and Diablon (Final Haunt). "Shadow: Finally... I've got ALL the Chaos Emeralds! / Sonic: Man... I didn't think you had it in ya."
- Sonic Team (February 25, 2015). Sonic Runners. iOS. Sega. Area/Level: Birthday on Windy Hill. "Sonic the Hedgehog: Shadow's never going to change. Still, it was good to see him, however briefly. Now, let's keep moving!"
- Sonic Advance 3 Japanese website. Retrieved on 1 May 2015.
- Mario & Sonic at the London 2012 Olympic Games
- "Blaze the cat, another one of Sonic's friends, is an All-Around competitor. As her name indicates, she also possesses no small amount of speed and will be a formidable contender in events like the vault." - Blaze the Cat's profile in Mario & Sonic at the Olympic Games
- File:Blaze profile SG.png
- Sonic Team, Dimps (September 14, 2007). Sonic Rush Adventure. Nintendo DS. Sega. Level/area: Machine Labyrinth. "Marine the Raccoon: Sonic, you were tops! Since you're my best pupil, I'll let you 'ave a go at bein' leader when I step down."
- Sonic Team, Dimps (September 14, 2007). Sonic Rush Adventure. Nintendo DS. Sega. Level/area: Ending. "Marine the Raccoon: Sonic... Tails... / [...] / Th... thanks, guys. You're the best mates ever."
- Sonic Team (November 7, 2017). Sonic Forces. Nintendo Switch. Sega. "Infinite: Well, looks who's back from the dead: The Little Blue savior. But what's that I smell? You reek of fear. Glad to see I left an impression. / Sonic: That's not fear. I ran all the way over here. And you haven't left an impression. I don't know anything about you, not even your name! / Infinite: You may call me, 'Infinite' in the brief moments that remain to you. / Sonic: Oh, great! See, Infinite? Now we're getting to know each other. So, what's your favorite color? Do you like long romantic walks on the beach? What's the source of your power? You can skip the first two questions if you'd like. / Infinite: The source of my power is none of your concern. / Sonic: Sorry, but you've just GOT to share the secret of your power with me, I insist!! / Infinite: Your insistence is futile!"
- Sonic Team (November 7, 2017). Sonic Forces. Nintendo Switch. Sega. Area/Level: Mystic Jungle: Vs. Infinite. "Infinite: Still thrashing around, I see... you filthy little sewer rat! / Sonic: Haven't you seen a hedgehog before? C'mon, I'll show you my spines!"
- Sonic Team (November 7, 2017). Sonic Forces. Nintendo Switch. Sega. Area/Level: Eggman Empire Fortress: Vs. Infinite. "Sonic: Wrong, loser! The things that can't be defeated are heart, soul, and the bonds of friendship. 3 things you and your Counterfeit Cronies lack!"
- Sonic Team (November 7, 2017). Sonic Forces. Nintendo Switch. Sega. Area/Level: Vs. Infinite. "Sonic: Hey don't be scared. This is your moment to shine. / ... / Sonic: Keep going. Don't let your fear own you!"
- Sonic Team (November 7, 2017). Sonic Forces. Nintendo Switch. Sega. Level/Area: Ending sequence. "Sonic: Hey, you taking off, too? I was thinking the same thing. Ya gonna keep moving forward, no matter what, yeah? Heh, you and I aren't so different. See ya later, buddy!"
- (June 1996) "Sonic the Fighters" (in Japanese). Gamest No. 173, pg. 40. Retrieved 15 July 2018.