Mr. Fizz is the head of the Soda Control Board who has raised the legal soda drinking age to thirteen and enforces this law strongly. Mr. Fizz speaks with a Spanish accent and wears a fancy white suit and purple glasses. He also has a suit of robotic combat armor made out of soda barrels.
His main enemy is Numbuh 2. Mr. Fizz appears in Operation: P.O.P., Operation: S.I.X., and the Gameboy Advance game Operation: S.O.D.A., of which he is the main villain. He got capture by a Senator Safely.