This is more a question about Tom as opposed to Tomco but like in the book it mentions that the reasons for the marks on Star's cheeks are due to her family's exposure to magic (the idea being magic leaves a mark). I was rewatching "Pizza Thing" yesterday and noticed Pony Head also has love hearts on her neck. Makes sense as Pony Head has been seen to use magic. Tom has used magic on nearly every occasion he has been present in the show and lacks any marks like this though. Any theories?