Shadow is a bio-mechanical hedgehog, created by Dr. Gerald. Robotnik learns of this and breaks into a top secret G.U.N research facility to retrieve Shadow. Shadow persuades Robotnik to, along side him activate the Eclipse Cannon on the abandoned space colony ark and take over Mobius, but has Shadow got another motive?... Shadow's main ability is 'chaos control' he is able to harness the power of the chaos emeralds to warp space and time, he thinks of himself as 'the ultimate life-form'.