Hafþór Júlíus Björnsson is an Icelandic professional strongman, actor, and former professional basketball player.
He plays Ser Gregor "The Mountain" Clegane in the HBO series Game of Thrones.
I invite you to collect as many characters as possible ! Comment them making sure they are not already in the story and I will add it myself (because I prefer the actor to be mentioned with a picture of the person in his role) !
Enjoy !...
