Sonic Adventure 2: Battle

Following the events of the first Adventure, Sonic is captured by the military unit G.U.N, framed for a crime he did not commit. He escapes soon after, only to run into a black hedgehog named Shadow (ORIGINAL CHARACTER, DO NOT STEAL), who demonstrates his power over the Chaos Emeralds known as "Chaos Control".

Shadow disappears, leaving Sonic to be recaptured by G.U.N, and so our story begins...