Super Shadow (Sonic X)

Super Shadow is the super transformation form of Shadow the Hedgehog.

History
After Christopher Thorndyke (while it was Amy in the game) is able to remind Shadow that Maria Robotnik wanted him to help the people of Earth and become their friends he helps Sonic defeat the Biolizard. He then transforms using the Chaos Emeralds into Super Shadow, along with Super Sonic. He stops the Space Colony ARK from crashing into Earth by removing his Inhibitor Rings and transporting the ARK a safe distance away from Earth. He is presumed dead by everyone afterwards.

Super Shadow reappears during the middle of season 3 where he alongside Super Sonic save the crew on the Blue Typhoon and Eggman's spaceship from the forces of Red Pine by luring him into a Black Hole and then narrowly escaping in time.

Super Shadow's final appearance is during the final battle with the Metarex king Dark Oak. He and Super Sonic are unable to break through Dark Oak's Forcefield until Cosmo the Seedrian, in her Super Form fuses herself with him so that he would be immobilized and forced to drop the shield. Cosmo urges Miles "Tails" Prower to shoot them both with the Sonic Driver despite knowing that this would kill her and she says that as long as her friends survive she doesn't care what happens to her. Super Shadow and Super Sonic hop into the Sonic Driver and after being encouraged by Cosmo who tells him that she wants this, Tails fires the Sonic Driver while tearfully shouting that he loves Cosmo. To rescue Cosmo from death, Super Shadow and Super Sonic use Chaos Regeneration on her disappearing body. However while this keeps her alive it turns her into a seed where she isn't able to interact with anyone. Super Shadow then knocks Super Sonic unconscious and knocks him back to the Blue Typhoon so that he wouldn't die from what Super Shadow was about to do. After removing his inhibitor Rings Super Shadow uses Chaos Control to warp the Blue Typhoon and Dr. Eggman's space ship to a safe distance away from the explosion of Dark Oak's corrupt planet egg.