Skully Pettibone is a "broom mate" of Scary Godmother, as well as the skeleton in the closet and house keeper.
Skully is extremely flamboyant and theatrical. He also seems to be very concerned with appearance, considering that he bleached his bones for the party. He seems to enjoy cleaning and doing chores for Scary Godmother, asking her if he can help in any way, with the exception of cleaning up any mess of Harry's.
He is seen wearing nothing but a black top hat with a wide, white band, and a black bow tie. In the second movie, he wears a cowboy costume, including a blue and red cowboy hat with a star on it, a blue vest, and a belt with a gun holster. Skully gives his hat and his belt to Orson later on in the Halloween party.