Zombozo is an psychic vampire clown who is one of Ben Tennyson's many enemies. A cruel and creepy clown mastermind with some similarities to the Joker from Batman, Zombozo was mostly hard to defeat by Ben because he was afraid of clowns and him. Ben managed to conquer this fear and defeat Zombozo.Despite being a minor villain in the original show, Zombozo played a key role by introducing the Circus Freak Trio, who later became recurring villains. His episode was also the first one to hint the existence of Ghostfreak's true form, possibly anticipating the Zs'Skayr storyline.