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.
A feature-length film that is a continuation of the series. The action takes place 11 years after the events of the series and focuses primarily on the now adult Ciri and her travels between dimensions.