Fan Casting Sonic the hedgehog 3

Eggman is in need of the Chaos Emeralds once again. He discovers a weapon in a military base: Shadow, a hedgehog that is immortal and ageless. Shadow says that he will grant Eggman a wish. Eggman wants to conquer the world, of course! Eggman goes out in search of the Chaos Emeralds. He built a robot named Metal Sonic, Eggman, Shadow, and Metal Sonic are in search of the 4 otherChaos Emeralds. It's Sonic,Tails,and Knuckles's job to save the world, or else: the world will be destroyed!