Cinos

Cinos is the evil doppelganger of Sonic the Hedgehog. He is a black hedgehog with red shoes created by Eggman to kill Sonic and his friends. Cinos' debut was Obstacle Race, where he raced Sonic for the Chaos Emeralds.

Other information
Cinos' name is Sonic backwards.

Trivia

 * Cinos is as fast as Sonic. In Obstacle Race, he was beating Sonic. That is 'til he ran into a robot, which made Sonic able to skip him and beat him.