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.
In this game, each player selects two characters respectively and face other as duos in tag team fighting matches, with the objective to knock out one of the members from the opposing team (deplete the opponent's health).
