Remus John Lupin

Backstory

attended Hogwarts and was Sorted into Gryffindor House. To secure his safety, as well as that of his peers, Remus would be brought to the Shrieking Shack once a month for his transformations in order to prevent him from attacking other students. However, this isolation caused him to attack himself out of frustration. This, and the painful monthly transformations, made the villagers of Hogsmeade mistake his screams for that of violent ghosts. Dumbledore, wanting to keep the truth of these noises a secret, encouraged these rumours. Thus, the building was dubbed the Shrieking Shack, which held the reputation for being the most haunted building in Britain.[10]