Petey Piranha

Petey Piranha is a somewhat recurring boss in some of the Mario games. He looks like a strange, more human Piranha Plant wearing pants and petals around his head, giving him a baby-ish appearance. He first appeared in Super Mario Sunshine as one of the first bosses, and re-appeared in Mario and Luigi: Partners in Time, also as a boss. He also appeared as a playable character in Mario Kart: Double Dash!!, and Mario Superstar Baseball.