(Shadow the Hedgehog, HUMAN AU.) 
Shadow is a mysterious, brooding, and sharp-witted alien lifeform. He is also a loner who dislikes humanity and can be aggressive and smug. He is incredibly violent and revenge seeking. He's a renegade who can just as easily serve the forces of evil as those of good. He is the human form of Chaos energy, and can easily harness it. 
His hair naturally grows black with red streaks. He's 6'3 and lean, but muscular. 
He can teleport, and is extremely strong Red eyes