3D Doom the Hedgehog

Doom the Hedgehog was the replacement for Shadow. He was created by Doctor Eggman, and made to be just like Shadow, only with much more dark power. However, he was too strong for Eggman to contain. He wasn't complete though, he was only 99% darkness rather than 100%. This could be the only chance for the survival of the world, and the hope that Shadow can overcome his sinister brother.