|Shadow the Hedgehog|
|Alias||Ultimate Life Form|
|Series||Sonic The Hedgehog|
|Location||Central City: G.U.N. Base|
|Nano Item||Chaos Shard|
|Voiced by||Kirk Thornton|
Shadow The Hedgehog is a anti-heroic hedgehog who was created by Professor Gerald. He betrayed Dr. Eggman to become friends with Sonic the Hedgehog. After he and Sonic defeated Bio-Hazard, Shadow was found alive by Rouge and had a case of amnesia. His real father is Black Doom.
Shadow must recover his memory and must help stop Fuse from taking over the world. In the Future, he seems to have recovered his memory fully. In the Future, he fell protecting himself from Dark Fuse's new monsters in Flame Core. At one point, Rouge the Bat and E-123 Omega help Shadow recover. Shadow's Fusion is fought in a mission of Blaze the Cat, and his Nano is obtained in the same mission.