Chaos Knuckles is a transformation that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It was an evolution of Knuckles the Echidna that had been engineered by his father Locke's genetic self-experimentation and the infusion of Knuckles' egg with massive amounts of Chaos energy. Ultimately, Knuckles evolved beyond the scale of any other Echidna into a virtual living Chaos Emerald with limitless powers and abilities. Chaos Knuckles' control was imperfect though, and he ended up sacrificing his power to save the life of his ancestor Dimitri, leading to Knuckles' temporary demise.