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.
Set on the fictional planet known as No Man's Land, the plot follows Vash the Stampede, a famous gunman who is constantly fighting bounty hunters seeking to obtain the immense bounty on his head.