Shadow The Hedgehog

Shadow the Hedgehog is a character that appears in the Sonic the Hedgehog series. He is an anthropomorphic hedgehog/Black Arms hybrid who resembles Sonic the Hedgehog in many ways[9] and serves as his arch-rival and occasional ally. Shadow was created as the "Ultimate Life Form" by Gerald Robotnik by using the DNA of Black Doom and is the final result of Project Shadow. His purpose was to provide ways to develop a cure for incurable deadly illnesses, more specifically for Gerald's granddaughter Maria Robotnik, who he had a great bond with. However, he was eventually captured following his creation and put into stasis by G.U.N. when he was deemed as a threat to humanity.

Shadow is sharp-witted, always on edge, and has a strong sense of purpose, always willing to accomplish his goals by any means, 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