Thewlis plays Professor Lupin, the new Defense Against the Dark Arts teacher in this adventure film directed by Alfonso Cuaron based on the book by J.K. Rowling. Lupin tries his best to teach his students while a criminal is on the loose, all the while trying to guard his dangerous secret. Co-starring Michael Gambon, Dan Radcliffe, and Emma Watson.
The werewolf transformation scene [in Prisoner of Azkaban] was a standout for me, because as a child, I’d always pretend to turn into a werewolf. It was a little uncomfortable and annoying with all of that makeup, but it was well worth it to have a werewolf scene under my belt.