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.
Scary Godmother: Skully is very faithful and loyal to Scary Godmother, and will do anything for her. He often helps out with chores, gets her ingredients for her concoctions and treats, greets guests when Scary Godmother can't do it herself immediately, and even scolds Harry for her.
Harry: He has an extreme hatred for Harry and his lazy, annoying, over eating, messy ways. He wont let Harry eat any of the party food, even when the party has begun and all the guests have arrived. When all the food is gone, Skully suggests serving Harry to the guests (although he could have been joking).
Hannah Marie: Skully is affectionate of Hannah, although he does scare her the first time he meets her when trying to explain why monsters aren't scary. He asks her about her life, and opinions on his costumes and the Halloween decorations.
Check out Skully Pettibone/Gallery Here.