Super Sonic (Sonic X)

Super Sonic is the super-powered transformation of Sonic the Hedgehog.

Sonic first becomes Super Sonic in episode 26 after Sonic gains power the Chaos Emeralds that his best friend Chris reclaimed from Dr. Eggman falls into the sea and are melded together inside of Sonic who had been tossed aside by Eggman's Egg Emperor. With his strength fully regained, Super Sonic warns Knuckles to get away because he is going to destroy the robot. After it is easily destroyed Chaos Control is induced and Sonic is seen in the spatial warp with an unconscious Chris. After gently waking him up Chris pleads with Sonic to take him with him and that Chris doesn't want to be apart from his best friend. Super Sonic uses Chaos Regeneration to heal Chris's wounds and Chris embraces Sonic in a hug which Sonic returns. Sonic tells Chris that even without him here he's sure that Chris will be able to take care of himself. Chris strongly disagrees, tearfully stating that without Sonic he'll be all alone and he'll go back to being a coward who can't do anything. Super Sonic then disappears with a smile and tells Chris thank you for everything he's done for him. Thankfully Super Sonic does a favor for Chris and instead of sending himself home he brings several parts of his world to Earth so that Chris won't have to part with him yet.

In the Sonic Adventure saga, Super Sonic is called forth mostly the same way as in the game. The only differences are that Dr. Eggman, Cream, and Chris each find one of the Chaos Emeralds and give them to Sonic where as in the game Amy Rose, Knuckles, Tails, and Big were the only ones who brought the Chaos Emeralds to Sonic. Sonic also shows a bit more strategy in defeating Chaos as he uses his flaming golden aura to evaporate Chaos's tentacles. He also protects his friends when Chaos tries to harm them stating ''This fight is with me! Leave them out of it!''

In the Sonic Adventure 2 saga, Super Sonic is also called forth exactly the same way. But before he fights the Biolizard he makes a detour to check up on his friends, when he notices that Chris is unconscious from Shadow beating him, he goes over to Chris and heals him causing Chris to stir. Sonic then teleports to outside of the Ark with a smile on his face.

Super Sonic next appears when Dr. Eggman is about to kill Tails with his new tracking missile (Although Eggman only wanted to teach Tails a lesson and was planning on self destructing it until he learned that a self detonation hadn't been installed.) Super Sonic destroys the missile and Eggman's Egg Fort. Super Sonic then leaves Tails and lands in front of Amy's house.

Super Sonic reappears in the first episode of the third season battling the Metarex king Dark Oak in outer space. For the first time Super Sonic is having a hard time fighting and it looks as though the enemy would win. To prevent Dark Oak from obtaining the Chaos Emeralds, Super Sonic ejects them from his body and throws them into the outer limits of space. Unfortunately this makes Sonic unable to maintain his super form so he falls down to the planet but is thankfully rescued by Dr. Eggman.

Super Sonic makes his next appearance alongside Super Shadow fighting off Red Pine and his fleet of Metarex battleships while also pushing away the Blue Typhoon, and Eggman's spaceship from the Black Hole.

Super Sonic makes his last appearance during the Final Battle against Dark Oak alongside Super Shadow, while being able to put Dark Oak on the defensive they are unable to break through his force-field. Cosmo now in her Super form however is able to break through and fuses with Dark Oak, immobilizing him in the process and forcing him to drop his force-field. She then begs Tails to fire the Sonic Driver at the both of them while she keeps him at bay. However in doing so would mean Cosmo would die as well which is a fate she says she is willing to accept as long as her friends survive. After being encouraged by Eggman and by Cosmo who says she wants this, Tails tearfully shouts that he loves her and fires the Sonic Power Cannon with both Super Sonic and Super Shadow in it. Afterwords Super Sonic and Super Shadow use Chaos Regeneration to rescue Cosmo from the fate of death. However while it does keep her alive, it turns her into a seed that can't interact with anyone. Sonic gives the seed to Tails who plants it in hopes that it will eventually sprout back into Cosmo.

Trivia

 * Super Sonic's eyes are sometimes colored orange instead of their usual Ruby Red.
 * Super Sonic knows Chaos Regeneration which hasn't been shown in the games.