Many Faces of The Mountain
Since his horrific season four duel with Oberyn Martell, Gregor Clegane a.k.a. The Mountain had been portrayed by Icelandic strongman Hafþór Júlíus Björnsson, whose enormous frame made for an imposing physical presence in The Mountain’s undead state. However, two different actors played the character in the show’s early seasons, starting with Conan Stevens in the season one Tourney of the Hand, and then Ian Whyte (who also played the giant Wun Wun) in Harrenhal in season two.