Shadow the Hedgehog

Shadow the Hedgehog or also known as the "Ultimate Life Form" is a character from the Sonic the Hedgehog franchise, and also the main antagonist, playable protagonist and deuteragonist in, Sonic Adventure 2. He serves as the protagonist in his own game of the same name, and one of three protagonists, in Sonic 06.

He is Sonic the Hedgehog's arch-rival and spitting image, in speed, and also the creation of Dr. Gerald Robotnik and Black Doom.