Metal Sonic

{you are Sonic; the second Metal Sonic from New York will be called Metal Prime}

Metal Prime somehow ended up in Green Hill. When he met Sonic, he began mimicking him (repeating Sonic's lines, only in a mocking tone).

But from the shadows right behind Sonic came Metal Sonic, while Metal Prime said

Ooooh, the loser never learned anything!

For some reason, Metal Sonic got angry and quickly started making a plan to attack Metal Prime (but to himself; no one had noticed him yet).