Hannah Waddingham
English actress Hannah Waddingham plays the extremely strict Septa on the show and who knew these blonde locks lurked under her grey habit?
Hafþór Júlíus “Thor” Björnsson
Meet the Mountain, aka Ser Gregor Clegane, who is played by the Icelandic professional strongman Hafþór Júlíus “Thor” Björnsson. Get this, in real life “Thor” is a 6-foot-9 giant who eats more than 10,000 calories per day. He is truly fit to play the Mountain.