6. 4 characters for 1 actor.
Ian Whyte has portrayed 4 characters in Game of Thrones: a White Walker, a nameless giant, Ser Gregor Clegane, and the giant Wun Wun.
5. Catelyn Stark is the mother of Hermione Granger.
Michelle Fairley was very dramatic in portraying the strong and proud character Catelyn Stark. But there were few who noticed that she also played Hermione’s mother in the Harry Potter series.