Which character is nicknamed "The Mountain" and played by Hafþór Júlíus Björnsson in the TV version of Game of Thrones?
Hafþór Júlíus Björnsson Hafþór Júlíus "Thor" Björnsson (] ; also Hafthor Julius Bjornsson, born November 26, 1988) 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".
Théoden Théoden is a fictional character in J. R. R. Tolkien's fantasy novel, "The Lord of the Rings". The King of Rohan, he appears as a major supporting character in "The Two Towers" and "The Return of the King".