Billy Batboy is a member of the evil Sinistras and a villain in the Thumb Wrestling Federation.
Billy Batboy was always confused. When he joined the Sinistras he wanted to be powerful but he is very weak and not a good fighter. He hopes his bat mask would make his enemies afraid of him but it isn't scary. He looses all his matches throughout the seasons. However in the fourth season he ruined two of Bucks Gazillion's plans and was able to steal the secret plans that Senator Skull needed to overthrow Bucks.
His special attack is summoning a bat called Leatherwing that flies around then usually falls on him. However it actually worked one time during a fight with Mahi Mahi Mindy.