Filius Flitwick

Filius Flitwick (born October 17, year unknown) is a fictional character in the Harry Potter books. Flitwick is the Charms professor and head of Ravenclaw house at Hogwarts. It is rumoured that Flitwick was dueling champion when he was younger. Flitwick took part in the insurrection against Dolores Umbridge and is known to empathise with "half-breeds", such as Hagrid, due to the fact Flitwick himself is part goblin. As such, he is very short and requires a stack of books in order to see over the top of his desk. He has white hair and taught at Hogwarts when James Potter and company were there.

Warwick Davis played Flitwick in the first two films. He also played the goblin bank teller in the first film. He will return in his role for the fourth movie, Harry Potter and the Goblet of Fire.