Another Harry Potter Character Comes Out? 25.03K Brian Moylan 04/04/11 02:58PM Filed to: The Gays The Gays Harry Potter professor Lupin David Thewlis Coming Out David Thewlis, who plays Professor Lupin in the Harry Potter movies, says he plays his character as a "gay junkie." Are these characters' sexual orientations decided arbitrarily by the Sorting Hat or something? At least Dumbledore has a date now!