Remus Lupin is a kind, intelligent, and softly spoken half-blood wizard who features light brown hair, a pale face, and shabby clothing. He is secretly a werewolf afflicted with lycanthropy since childhood, a former Hogwarts teacher, and a loyal member of the Order of the Phoenix.

Fiercely protective of his best friend James Potter and his godson, Harry Potter. Prone to recklessness, bitterness, and deep depression due to his long wrongful imprisonment and forced confinement.