Sonic the Hedgehog (Sonic Boom)

Sonic the Hedgehog is the main protagonist of the Sonic Boom series. He is an anthropomorphic hedgehog gifted with super running speed, who fights Dr Eggman and other villains alongside his group of friends as the leader of Team Sonic to preserve peace and freedom.
==Concept and creation==
During the development for Sonic's redesign, the developers went through a long process where they experimented with different accessories before they decided to stick with the "Scarf Sonic" design. They settled with giving Sonic a neckerchief because it payed homage to the classic adventure theme and was an action adventure trope which fit with Sonic's game character role while emphasizing his "get-up and get-go" attitude and his love for adventure. According to Bob Rafei, Sonic's scarf is partially based on Nathan Drake's scarf from Uncharted 3: Drake's Deception.
The sports tape Sonic wears is inspired by fighters and American football players and is meant to give him a sense of practical heroism by showing that he is not vain, which is a trait more fitting for villains, when saving the world and to give him a more grounded approach. He especially got sports tape around his feet to emphasize that his specialty was speed. While his following design was nearly identical to his main series counterpart, he eventually received blue arms and additional spikes to differentiate the two hedgehogs. 
== Appearance ==
Sonic is an anthropomorphic hedgehog with blue fur covering most of his body, and peach skin that covers his muzzle, insides of his ears and front torso. He is rather slim, with reasonably long arms and legs, along with visible shoulders, giving him a lanky appearance. He has a fairly round head with six thick quills protruding from the back of his head and small, triangular ears on top of his head. He also has cowlick-like spikes that sticks out from his top and lower head quills, two spines protruding from his back behind his shoulders, and a short tail. He also has conjoined green eyes and a fairly long black nose. He also has a visible neck, although it is usually covered by his attire.
For attire, Sonic wears a pair of white gloves with cuffs and a pair of red sneakers with white cuffs, grey soles, a rectangular gold buckle on top. He also has white sports tape wrapped around the palms of his gloves, the heels of his sneakers (to reinforce his shoes) and his lower forearms and legs. Finally, he sports a brown neckerchief. He also occasionally wears his Communicator.
In addition to his usual clothes, Sonic has a number of additonal attires:
*At formal occasions like the Awardy Awards, Sonic wears an open brown jacket in addition to his regular attire, with the exception of his neckerchief.
*For underwater missions, Sonic has his own high-tech attire which includes a blue wetsuit with a white stripe on each side and his face icon on the chest, red flippers resembling his shoes, and a transparent face mask attached to an oxygen tank on his back.
*For cold weathers, Sonic wears a thick grey and dark grey down jacket with a hoodie and red details, grey and dark grey mittens with red cords, and grey, white and red winter boots.
*One time, Sonic wore a waiter uniform, which included a black jacket and bowtie.
*When playing for the Pin Dashers, Sonic wears a dark blue and white-striped bowling shirt with matching bowling shoes. His shirt is likewise emblazoned with the team's logo.
*When performing with Dude-itude, Sonic wears a glittery jacket and microphone headset.
*For high-altitude trips, Sonic has an advanced white spacesuit with blue boots, belt and arms, and a white helmet with an antenna on top, spikes to accommodate his head quills, and a transparent visor.
*For soccer matches, Sonic has a soccer uniform that includes a white and blue t-shirt with a blue chest logo shaped like Sonic's head, long white socks, and white shoes with blue laces and red soles.
*When he worked at Meh Burger, Sonic wore the standard Meh uniform, which is a lavender shirt with yellow leaf-markings and a name tag on it.
*During an attempt to lure a possessed Tails out, Sonic wore a sunflower costume. This costume consisted of a green bodysuit and a hood shaped like the head of a sunflower.
*When going to a different dimension, Sonic wore an advanced white inter-dimensional suit, similar to his spacesuit, with blue boots, blue stripes on the wrists and shoulders, a blue holster belt with a miniature portal generator and other weapons and gadgets instructed to use in an dire emergency, a chest logo shaped like his head, and an in built, Communicator like screen built into the arm, which can be used for communication, locating others and a quick scan of the area with a special scanner built into the palm, with a microphone headset fixed to the side of the head with a blue and white disc. This suit is made by Violetta the Hedgehog, with assistance by Miles "Tails" Prower.
*On holidays, Sonic has been known to wear a long silver scarf and a red and white Santa Hat with a golden bell.
==Personality==
Much like the wind, Sonic is free-spirited and always on the move. He has a passion for adventure and is very much a thrill-seeker and adrenaline junkie, always looking for the next thrill, challenge, and triumph. For Sonic, speed is a way of life; he runs fast, thinks fast, and even eats fast. Being addicted to speed and action, Sonic gets bored and restless during extended times of peace. In fact, Sonic cannot process the aspect of being restricted and being unable to move around very much makes him extremely stir-crazy. He acts on instinct and lives in the moment, though he is very impatient, impulsive, and tends to run headlong into trouble without a plan. While he can be shortsighted of others' feelings (making him blunt, honest, and rude to a fault), his heart is nevertheless always in the right place. 
Sonic's typical driving force is his immensely large, self-obsessed ego, yet his demeanor is normally laid-back, cool, and carefree. Possessing a snarky tongue and sassy attitude, he is cocky, brash, quick-witted, and often jokes around even in dire situations. He likewise has a playful, albeit never mean-spirited, arrogance about him and likes to play small pranks. When the situation calls for it though, Sonic can be serious and will immediately rush to aid those in dire need. Always on the heroic side of things, Sonic is very benevolent with a strong sense of honor, justice, and fair play, being fully committed to helping out those in need at all times. Sonic also does not back down or give up, because he has an unwavering belief and faith in himself and his abilities. Sonic is also noted to be very courageous. However, he suffers from a severe case of aquaphobia which has only worsened with time. He is also a bit of a slob at times, and chores do not sit well with him.
While he often acts like he does not care, Sonic is rather protective of his image. To this end, he will get rid of any documentation and preferably dodge any performance that does not show him looking cool, even if it means his friends will look bad. He is likewise uncomfortable about being open about his feelings and actively tries to dodge such conversations, presumably because he considers them uncool. He does not like it when other express themselves either. However, he is willing to lower his guard for the sake of his friends. Sonic can also get rather over-competitive when contending with another, prompting him to let things get way out of hand out of overconfidence. If he loses a competition, Sonic becomes obsessed and borderline crazy about settling the score with his opponent, as he cannot accept the fact that he can actually lose. Despite having his own fair share of quirks and willing to fool around just for the sake of it though, Sonic is very grounded and has a profound common sense that often makes him the "straight man" amongst his friends.
Though rather selfless when saving the Village, Sonic does come off as somewhat sensitive about his hero-status, becoming extremely jealous, defensive, and frustrated whenever someone else rivals his fame, steals the spotlight, or when the civilians turn against him. As such, when deprived of the chance to be the hero, Sonic gladly springs into action when he gets the opportunity to save the day in the end. This mindset even led to him temporarily retiring due to how ungrateful the citizens were for his efforts. Even so, when the times really call for it, Sonic will forgo his opinions to help those in need. Sonic is also a true chili dog enthusiast who can identify the ingredients of a chili dog with one bite.
Sonic is noted to be strongly loyal towards his friends. Though he does not always show that he enjoys others' company (mainly because he finds himself too cool for that), he nonetheless cares deeply for his friends and will do anything for them. Early on though, Sonic was somewhat of a cynical loner. While he was willing to work with his friends in times of need, he would show more interest in going out alone and would even take credit for what the team did collectively. In time though, Sonic grew to see how his team made him stronger and realized that his friends were his strength. Since then, Sonic has become a much more admirable team leader, being quick to ask for help and acknowledge their collective contributions. Regardless, Sonic's confidence and impatience tends to get in the way of his team spirit, as he sometimes feels that things will get done more quickly if he handles them alone. This attitude also makes him kind of snarky and boastful in the faces of his friends at times. Although Sonic usually defends his actions in such cases, he is nonetheless capable of admitting he was wrong in such situations. He also strongly believes in the friendship his team shares and will never do anything to compromise it; Tails in particular has noted that Sonic will never give up on his friends, "no matter how bad things get." 
==Powers and abilities==
Sonic is a powerful fighter in his own right, and is tying for Team Sonic's strongest member with Violetta; when pitted against Shadow the Hedgehog, who can defeat the other members of Team Sonic with ease except one, Sonic has proven himself capable of fighting Shadow to a near standstill. Yet, when pitted against Violetta herself, she could defeat him in less than three minutes and hurt him enough to deliver a coup de grace. 
Sonic's most notable skill is his super speed, allowing him to move and think faster than Mach 1. Though his exact top speed is unknown, he is credited as the world's fastest hedgehog and even the fastest being in his universe; he can effortlessly create a sonic boom, run along the surface of water, walls and ceilings, outspeed lasers, start small fires from friction by running on the ground, and create strong enough gusts when taking off to knock over boulders. His speed is so great that he can run a trip that would take others thirty hours by car to make in a few seconds. Even the effects of the Slow Motion Machine, which slows everything down to a crawl, could only reduce his speed and mental processes to normal levels. 
As far as stamina goes, Sonic's is seemingly limitless, as he claims he never gets tired. He did not appear to know true physical exhaustion until he swapped bodies with Eggman. In line with his speed, Sonic has significant acrobatic skills and agility, sufficient enough to perform perfect synchronized mid-air movements. He also has extremely quick reflexes, being able to react instantly to dangers, perceive high speed movements in slow-motion, and react instantaneously to Shadow's teleportation-based surprise attacks. He also has enhanced jumping skills, allowing him to jump very high into the air.
Sonic possesses significant physical strength, though not on the same level as Knuckles, and much less than Violetta. He can kick a robot hard enough to knock it through a rock wall, his spinning maneuvers can smash through walls, and he can punch with enough force to cause cracks and release shock waves, though it is debatable whether it is due to his super speed, his strength, or a combination of both. Additionally, Sonic can even run at maximum speed while weighted down by objects larger than him. Sonic is also shown to have incredible durability, having survived several laser blasts from powerful Destruction Troops which were meant to kill him, getting hit by an energy blast enough to take out Giant Robot, and getting hit into the ground by Shadow hard enough to make a large crater (though he was briefly stunned long enough for Eggman to take a selfie with Shadow); in addition, he displays a fast recovery rate, as after being knocked into the ground by Shadow, he quickly recovered enough to deal a surprise blow to him.
Sonic's main offensive maneuver is his "spin attack", where he curls tightly into a concussive ball. In this stance, Sonic can damage, destroy and mow down obstacles or foes when in motion. One of his signature moves is the Spin Dash, a nearly unavoidable move where Sonic spins on the spot before blasting off at full speed which can destroy most foes with a single strike. Sonic has mastered this move to perfection, being able to use it with enough precision to weld metal fences together from friction. While not a strategist like Tails, Sonic has a very quick wit and has often come up with his own plans to take down his enemies. He is also a skilled combatant, and his fighting style relies on his footwork styles along with fast-strike tactics and quick maneuvers.
After he gained the powers of the Crystal of Nature, he gained healing powers, though he couldn’t use it on himself, and he had to be supercharged to use them. It is rumoured his speed came from that crystal only, being chosen as its sole guardian. 
===Equipment===
Sonic wields a Communicator, a multifunctional and waterproof smartwatch created by Tails. This device allows Sonic wide-ranged radio communication between similar devices. It can as well generate its own Enerbeam (an energy tether that can latch onto objects or form a makeshift whip/rope), run mobile apps, tell the time, interface with Sonic's tech-based equipment for remote operation, and assume other powers. Violetta also modified it so it can shoot tranquilliser darts, which came in handy. It also comes with its own tracking device.
Sonic also has a unique set of clothes referred to as a Luminous Suit which can provide him with light in otherwise light-deprived environments.
For opponents that require a little more muscle, Sonic has a mech suit from the Ancients that he found in some ruins. This mech suit makes Sonic much more powerful, granting him increased strength without sacrificing agility or swiftness. It is also highly durable, capable of high-speed flight, and comes equipped with force-fields and lasers. The mech suit initially had a chip that corrupted Sonic's personality the more he used the mech suit, but after the chip was removed, he can now fully control it.
When faced with a surface he cannot run on, like lava or ice, Sonic uses Blue Force One to traverse such terrain.
==Weaknesses==
Suffering from aquaphobia, Sonic is incapable of swimming and sinks in water. He is also unable to utilize his speed properly in certain environment (such as on smooth ice), although he has the Blue Force One to make up for such situations.
==Relationships==
===Dr. Eggman===
Dr. Eggman is Sonic's arch nemesis. The two of them have hated each other since they first laid eyes on one another, though their relationship is very complex. On one hand, Sonic has a strong dislike of the doctor and fights him on a weekly basis, though he does not really take account of him and loves to tease him whenever the opportunity presents itself. On the other hand, when not battling, Sonic and Eggman keep a rather passive relationship where they let each other be nearby without seeking conflict. At times, the two have even been known to hang out together, though Sonic normally retains his general dislike and annoyance of the doctor. When Eggman claimed to be homeless, Sonic even allowed him to stay at Tails' home, though it was more on the grounds of proving himself the better person. 
While Sonic is quite happy to let Eggman stew in the trouble he has made for himself, he always ends up saving Eggman since it is the right thing to do. Sonic also loves playing pranks on Eggman when he is an easy target. Still, Sonic does not hold complete animosity for Eggman, as he has been known to feel guilty when he takes things too far with him. 
Ironically, Sonic knows a lot about Eggman's character and his preferences due to their frequent encounters, enough to let them get to the finals of Bro-Down Showdown]. Because of his constant victories over him, Sonic has a tendency to underestimate Eggman and forget how dangerous he can be. When dealing with a common threat or problem, Sonic and Eggman are willing to put aside their differences and work together, even sometimes showing a sense of good-spirited comradery and well-oiled teamwork, though they both agree that they can never really be friends since they are arch enemies. 
For all their opposing ways, Sonic and Eggman are ultimately co-dependent and need each other in their lives. While he does not mind Eggman leaving his life, Sonic finds things too boring for his taste without Eggman to fight, which makes him restless and paranoid. Similarly, without Sonic to challenge him, Eggman has no motivation to be a villain. For better or worse, their never-ending conflict is what drives them and keeps their lives balanced.
===Team Sonic===
====Miles "Tails" Prower====
Sonic's best friend and most trusted companion is Miles "Tails" Prower, whom Sonic has described as "his main man and BFF". He shares a brotherly relationship with Tails and they are equal partners in Sonic's adventures. They are extremely close and both are willing to sacrifice their life for the other. Sonic knows in particular that Tails always has his back when he is in trouble; Sonic's faith in Tails is in fact so strong that even when he was dealing with an alternate version of Tails who worked for the enemy, he alone believed unconditionally that he was good guy. The both of them will likewise always be there for each other (or seek each other out) whenever one them needs support. One time, when he was wrongfully sued, Sonic even noted Tails was the one witness among his friends that he could rely on, underlining just how much trust he has in him above all others. Also, while Tails is his sidekick, Sonic will still show outmost pride in Tails and his accomplishments, even when they outshine himself. While Sonic appreciates Tails' support and unwavering loyalty however, he does not like it when Tails is patronizing him or gets too mushy.
Sonic and Tails often hang out or go on adventures together by themselves, unlike most other of Sonic's friends, showcasing just how close the two are. There is rarely strife between them, and they have proven themselves a near-perfect duo; both provides 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. In addition, they work well together in combat. Conversely, they are just as willing to engage in friendly competitions with each other simply for fun. However, their competitions may not always turn out well due to Sonic's overconfidence and Tails' zeal. Also, while Sonic and Tails enjoy each other's company, they are still very different people, and being together for too long tend to make them bicker; Tails himself has pointed out that while they are best friends, they are not the best of roommates. Regardless of whatever issues that may arise between them however, Sonic and Tails respect and care for each other so much that both of them are unable to hold a grudge at the other for long. They are also willing to share the blame when they know they are both at fault, and will always make up on a good note when they find themselves in a dispute. Even so though, Sonic is not above having Tails take his place in otherwise embarrassing situations, or playing a few harmless pranks on him.
Though he might put Tails in danger with his half-baked plans, Sonic cares very much for his well-being, and will take care of him whenever he behaves oddly. Sonic will also not hesitate to push himself beyond his limits to protect Tails; when Hypnobot tried to finish Tails, Sonic rushed to save him despite having an injured leg. At the same time, Sonic has been known to be overprotective of Tails, like when he fired Tails as his sidekick after a brutal battle so that he would not get hurt. Once Tails proved himself though, Sonic regained his faith in him and rehired him on the spot. 
==== Violetta the Hedgehog ====
Violetta is one of Sonic’s best friends. They immediately hit it off despite Violetta having orders to kill him. Sonic, despite being on the verge of death, saw some good in her and convinced her to join Team Sonic, then sticking by her when his teammates voiced their doubts of her actually being on the side of good. Their relationship was a bit complicated at first, because Violetta was continually hurt by the other’s blatant thoughts of her still being the Black Assassin, but he eventually made her come around. Later, he and Tails find out she suffers from intermittent anxiety, which occurs when her powers explode. After this, he was determined to help her and began letting down his guard, which helped him become aware of other’s emotions. He shows that he deeply cares for her, occasionally going as far as to hug her. At first he flirted with Violetta for the fun of it, but he started showing feelings for her, though she seemed oblivious to the frequent shows, she flirts with Sonic lightly, hinting that she knows. Examples of his feelings is that in Miss Hedgehog Village Debutante, him being her date (in his mind, escort) to the gala, he complimented her, saying: 
“I finally understand the difference between pretty and beautiful.” 
“Quiet, already! I know you’re doing it to make me blush, which you haven’t yet!” 
Sonic complimenting Violetta, only to be brushed off. 
Sonic cannot stand seeing Violetta upset or having an anxiety attack, and will do anything to make her feel better. 
He is impressed with Violetta’s ability to modify and improve any gadget or machine, openly showing interest at what she has to offer. They spend a lot of time together, as both have a lot in common. He regards her as one of the strongest, most determined and influential people he has met, and Violetta thinks the same, both doing whatever they can to save the other, even if it means risking their life.
==== Amy Rose ====
Amy Rose is another one of Sonic's close friends and teammates, although their relationship is complex. While Sonic at times acts confused about hints to Amy's crush on him, it has been hinted that he is aware of it. This ambiguousness does little to hurt their friendship and concentration, like when they searched for a Chaos Crystal together without Sonic struggling. Sonic is likewise completely comfortable about hanging out with Amy. However, like most of his teamates, he is very afraid of her temperament. Also, Sonic usually tries to ignore Amy's suggestions to be more emotionally open about their feelings.
Due to Amy's tendency to take charge, Sonic perceives Amy as extremely overbearing and bossy which brings her at odds with his own laid-back attitude. He is also not very fond of Amy's ideas for group activities. However, while Sonic sometimes acts inconsiderate to Amy, he still appreciates her as a friend and teammate, and will try making up with her whenever he has upset her. In fact, Sonic cannot stand watching Amy cry, and will willingly talk about their feelings (something which he is extremely reluctant about) if it will help Amy feel better.
Sonic often claims to have no interest in Amy's love life and is quick to avoid or deny any indication that he is in a relationship with her. This includes denying Amy was his girlfriend with suppressed anger when she was addressed as such by Dr. Eggman. He further insists when he shows that he cares for her that he and Amy are merely comrades-in-arms. Nonetheless, there are hints that indicate that Sonic may have some feelings for her deep down. For example, he brushed off his concerns in an embarrassed way when Knuckles teased that Amy was getting ready for a date, and said nothing when Dr. Eggman asked him about his "deal" with Amy. Most noticeably though, the Bro-Down Showdown buzzers called out Sonic for being wrong when he denied Amy being his girlfriend. Also, according to UT], Sonic cares about Amy's well-being.
====Knuckles the Echidna====
Knuckles the Echidna is another of Sonic's close friends and teammates. However, the two of them are opposites in many ways, with Sonic being sensible, cool, and snarky while Knuckles is goofy, dim-witted and always disagreeing with him. Sonic in particular likes to tease Knuckles and does not think he is the sharpest tool in the shed, viewing him as a simpleton that always messes up without his supervision.
Sonic and Knuckles share a mutual bond of respect, though it was not always like this. During their mission to stop Lyric, Sonic was often reprimanded by Knuckles for all the mishaps he caused. Over time though, Sonic slowly reconciled with Knuckles and eventually made up with him. Nowadays, Sonic and Knuckles are deep down the truest of friends (though they will never really admit it), referring to each others as "bros." Even when Knuckles turns against him, Sonic refuses to hurt him when it comes to blows. To Knuckles in particular, Sonic helps fill out the kind of loneliness he gets about being the last of his kind by being the family he longs for.
Sonic and Knuckles' friendship exhibits a unique dynamic compared to their other relationships: whereas Sonic is more formal around his other friends, he and Knuckles are much more relaxed and outgoing when together, often spending their time hanging out by roughhousing and goofing off with various extreme (and often foolish) activities.Akin to Tails, Sonic can also be very selfless for Knuckles' sake; even though it meant facing Amy's wrath, Sonic willingly forfeited his chances to avoid it in order to save Knuckles from Obliterator Bot. 
Both Sonic and Knuckles have a friendly rivalry going on and they tend to compete with each other in all kinds of activities. Though Sonic normally remains cool about their rivalry since he usually wins, he rejects the idea of losing to Knuckles on purpose.
==== Crimson the Hedgehog ====
Crimson the Hedgehog also had orders to kill Team Sonic after Violetta spared his life. After she stopped herself, Sonic offered her a place on Team Sonic, knowing that she is almost as good a fighter as her older-by-a-minute sister, Violetta, though Violetta seemed to be much better than her. At first, Crimson was showing an attitude similar to Shadow, shocking Sonic since she was nothing like her older sister, but Crimson loosened up and showed a more positive personality after a talk with Violetta. They became very close friends, having their love for chilli dogs in common, passion for adventure and her tendency for attacking enemies without a plan. Sonic is unnerved by her slight paranoia, but he also got used to her, later referring to her as, ‘she is like a sister to me.’.
“So, how’d you like her?”
“A bit Shadow at first, but she turned out to be alright. Now, she’s almost as good as you. I said almost.”
Violeta asking Sonic about Crimson.
====Sticks the Badger====
Sticks is a member of Sonic's crew and one of his closest friends. The two are alike in the sense that they "go running into danger without a plan, a direction, or a clue," though it usually falls on Sonic to be the more sensible one between them. Sticks will occasionally join in on goofing off with Sonic. Like his other friends, Sonic is normally unnerved by Sticks' paranoia and stays skeptical about her theories and judgement in general. Additionally, he feels very uncomfortable when he actually finds himself agreeing with her crackpot theories. He also once hesitated to tell her that Lyric had kidnapped Amy, showing a degree of fear for her outbursts. Nonetheless, Sonic accepts Sticks' quirks and will apologize for doubting her when he is proven wrong. Likewise, Sonic thinks she is a very nice person deep down.
Very loyal to Sticks, Sonic likes her penchant for tackling foes head-on and considers her a valued teammate. In spite of his personal dislikes, he will also agree to help Sticks with her tasks at hand, like being her escort to a gala and going pet shopping with her. Once though, he considered himself a better survival expert than Sticks until she put him in his place.
===Villagers===
Due to his heroic actions, Sonic is well-known and beloved by the inhabitants of Hedgehog Village, and is highly respected for protecting them. At times (despite usually regarding him as a normal guy), they have been known to treat him like a celebrity of sorts, hosting a celebration after he (and his team) saved the village one million times, watching him with piqued interest whenever he makes a scene, constantly bringing him up on the news, and occasionally asking him for his autograph. At the same time, however, the villagers tend to be rather critical of Sonic, openly judging and shunning him for his behavior in public. The villagers are also quick to believe Sonic has turned evil whenever he is framed for a crime. When criticizing him, the villagers often take things too far, even going so far as to side with Sonic’s archenemy, Dr. Eggman, and show no appreciation for his heroic deeds, though it usually takes no more than another act of heroism to win them back over. Sonic cares about the villagers’ well-being, always springing to action whenever Dr. Eggman endangers them with his evil plans. Sonic will also sometimes make casual conversation with the villagers. However, he once became so angry over their ungrateful, over-sensitive attitude that he retired from hero work to spite them, though his conscience led him to come out of retirement and save them as soon as they were in danger again, and he forgave them when they saw the error of their ways and apologized to him.
===Lightning Bolt Society===
Despite being enemies, Sonic does not think highly about the Lightning Bolt Society. Like most others, he thinks they are a bunch of losers and hardly considers them a threat. Among this group, Sonic's most persistent foe is Dave the Intern, who often tries to destroy him (when not serving him at Meh Burger), though Sonic hardly spares him a thought. Nevertheless, though Sonic often ignores their usually minor schemes, he will not hesitate to stop the Lightning Bolt Society whenever they stir up too much trouble.
===Shadow the Hedgehog===
Shadow the Hedgehog is Sonic's arch-rival, who can match him in both speed, abilities and dashing looks. Outside physical similarities though, Shadow is the antithesis to all that Sonic is. Whereas Sonic is joyful, free-spirited and adventurous, Shadow is a brooding, serious and violently aggressive individual. While Sonic relies on his team and believes in teamwork, Shadow is a loner who only relies on himself. Shadow is by far, the only one who can defeat Sonic in fair combat. Sonic's rivalry with Shadow is hostile to the point of them being enemies, but regardless, they are willing to put their differences aside for when a greater threat is present.
Sonic and Shadow share a bitter arch-rivalry which goes way back. Between the two of them, Sonic is much more lucid about their rivalry, with Sonic normally approaching Shadow in his usual casual manner or being willing to walk away from him, whereas Shadow is quick to pick a fight. In fact, Sonic retains a neutral attitude when talking about Shadow, and has no real beef with the black hedgehog that provokes him to fight him. However, Sonic is easily angered by the way Shadow criticizes him for being weak and slow, and they usually end up arguing when they strike a conversation. Sonic will likewise take Shadow seriously when the situation calls for it, like when Shadow brutalized the rest of Team Sonic or when he found out Shadow knew something about Amy's whereabouts after Lyric kidnapped her. Regardless, Sonic has admitted that if Shadow was not such a "hard case", he would be a great addition to Team Sonic. He has also admitted that Shadow is one tough customer, displaying great respect for Shadow's skills.
===Lyric the Last Ancient===
In Rise of Lyric, Sonic had a deep relationship with Lyric, having been the one who stopped his plans a millennia ago via time-travel. Sonic himself viewed Lyric as a "slithering psycho." When first meeting Lyric after accidentally freeing him, Sonic was confused over Lyric's knowledge of him and his grudge at him (since Sonic had yet to stop him in the past). As he learned of his story with Lyric, Sonic became surprisingly determined to stop his plans to destroy the world, to the point where he would bear the responsibility alone since he had set Lyric loose. In the end though, Sonic saw he could not defeat Lyric alone and involved his team. Debunking Lyric's taunts of how his friends were his weakness in their final fight, Sonic beat Lyric with some aid and saved the world, redeeming himself for releasing Lyric.
In ‘’Sonic Boom: Shattered Crystal, Sonic had a less prominent, but still antagonistic relationship with Lyric. After Lyric kidnapped Amy, Sonic made it his personal mission to defeat Lyric and save Amy. Upon meeting him, Sonic was acknowledged as a worthy foe by Lyric, whom Sonic taunted with how he was unstoppable with a team behind him. In response, Lyric trapped Sonic's team. Defeating Lyric and saving his team, Sonic ensured his end as Shadow engaged him.
=== Iris the Hedgehog ===
Iris is Crimson and Violetta’s adoptive mother, and the head of the Assassin Raising Corporation (A.R.C.). Sonic holds a severe disliking for her due to the fact that she sent two highly trained women to kill him, one of which almost worked. This disliking only gets worse when she comes to destroy the world with the Crystals of Life. Sonic viewed Iris as ‘an excuse for an adoptive mother’, later taunting about her bad parenting skills. This led him to be captured and hid somewhere else, where he again expressed his dislike for her in a bitter tone. 
Sonic makes it clear that he holds no respect for Iris, always interrupting her monologues and rolling his eyes when he sees her. He has been told about her by Violetta and Crimson and stated, ‘Wow, I do not like her already.’.
===Vector the Crocodile===
Sonic initially did not have the best relationship with Vector the Crocodile, mainly due to their clashing egos. When Vector was called in to find Amy's Hammer after it got stolen, Sonic did not want to get outshined by Vector, prompting him to mooch in on Vector's investigation and attempt to outdo him. As such, Sonic would display some noticeable jealously towards Vector, and this is seen when he constantly criticized Vector's more radical ideas and outlandish theories. While Vector was able to take Sonic's behavior in stride thanks to his confidence in his own deduction skills, he did have his limit for how much of Sonic's defiance he could take. Due to this, they did share a bit of a one-sided disliking for each other, and even got in an argument. Despite their differences though, Vector has some degree of respect towards Sonic, and even asked for his help to solve a bigger case. After that, they establish a much friendlier relationship based on mutual respect, and Vector admitted they made a good team, which is high praise indeed from Vector.