Professor Lupin

Remus Lupin, one of James Potter's best friends at school. He was attackedby a werewolf and so couldn't do as much as he would have liked to when he was at school in case he hurt one of his friends. However, his friends found out the truth and stuck by him. He is now a member of The Order of the Phoenix. In the third book/ film he was Professor of Defence Against the Dark Arts but left at the end of the year at his own will.