Incognito

The Black Death, a super-powered crime lord, has been doing hard time ever since one of his henchmen ratted him out. Zack Overkill, former science villain thought by the Black Death to be dead, is now in the Witness Protection Program for giving testimony against his boss. He is required to take a drug that eliminates his super abilities and given a job delivering mail in an office. Bored with his now "normal" life, Zack finds a way to block the drugs affecting his super powers, and becomes a vigilante, but his actions reveal to Black Death that he is alive.