10 Actors You Totally Forgot Were In Harry Potter Movies

9. Julian Glover

Another Game Of Thrones actor with a slightly less likeable character from Westeros than Lady Stark also turns up in the Wizarding World, but you'd never know it unless you knew to look out for him. Or more appropriately, to listen out for him.

Julian Glover, who played Grand Maester Pycelle for more than 30 episodes of Thrones - until he was killed off by Maester Qyburn's Little Birds - also lent his voice to Aragog, the Acromantula who lives in the Forbidden Forest and who Harry and Ron meet in The Chamber Of Secrets.

His voice is almost completely unrecognisable, but it's definitely him.