Warwick Davis played Flitwick in the Harry Potter film series. He also played the goblin bank teller in the first film. During the first two films, Flitwick is an old half-goblin with a big white moustache. In the third film, this same character does not appear, although Warwick Davis plays another, different, character, a short human with brown hair and moustache, not very similar to the Flitwick in the previous movies. This character, the chorus conductor, is identified in the credits as "Wizard" and not Flitwick. Davis was hired because Flitwick had no role in the story, but the producers wanted him nonetheless. The character reappeared in the fourth movie, with the same make-up and still being the conductor, although in a speaking role. His make-up was not returned to that of the first and second because Mike Newell, director of the fourth, liked the younger-looking Flitwick better. He was not named in the movie, but was seen eating at the staff table and was identified in the credits as "Filius Flitwick", suggesting that Flitwick is also a music conductor. It is of course possible that Flitwick, who lives in the magical world and works in a highly magical setting, could simply favor changing his appearance every once in a while.
J.K Rowling said[4]: "I must admit, I was taken aback when I saw the film Flitwick, who looks very much like a goblin/elf (Ive never actually asked the filmmakers precisely what he is), because the Flitwick in my imagination simply looks like a very small old man.".
http://en.wikipedia.org/wiki/Professor_Flitwick
Their clothes are too current.
