Chaos Knuckles

Chaos Knuckles is a transformation of Knuckles the Echidna, when getting hit by the Chaos Control by Shadow the Hedgehog.

History
Knuckles' eventual transformation into Chaos Knuckles was set in motion even before he was born. It began when the Ancient Walkers sent a dream to his father Locke, warning him of a future threat that Knuckles would have to face and would only survive if he were made into a superior Guardian to those who had come before. Resolving to do this, Locke performed experiments on himself to alter his DNA, hoping initially that he would be able to make himself into a stronger Guardian and thus spare Knuckles the coming battle.