 He owns Bob, and is able to combine the skull's knowledge of magic with his own intelligence to become a formidable ally.It was stated in "Ghost Story" that while Butters has no innate magical ability, his natural talent for grasping and understanding magical theory has given him more raw ability in that arena than even wizards such as Harry.Butters also displays ingenuity in creating magic-powered devices, some of which use Bob as an energy source.