Friar Professor Binns Moaning Myrtle Sir Patrick Delaney-Podmore, leader of the Headless Hunt, a club for decapitated ghosts. The Wailing Widow Peeves , the Hogwarts  poltergeist , is not considered a ghost, but an “indestructible spirit of chaos” according to Rowling. [9] 8. Werewolves You have only ever seen me amongst