Shadow

Shadow is sharp-witted, always on edge, and has a strong sense of purpose, always willing to accomplish his goals by any means,[10] and always serious. Essentially a dark version of Sonic, Shadow can match him in both speed and skill, and can use Chaos Control with a Chaos Emerald to warp time and space.[11][9] While preferring to work alone and not one of his closest friends, he has helped Sonic and his allies when needed.