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.
When Arkham Asylum falls into the hands of the Joker and the inmates, the caped crusader finds himself in for the most dangerous night of his life, as he must confront some of his greatest foes and save Gotham City from total destruction.
