You Won’t Believe How These ‘Game Of Thrones’ Actors Look in REAL LIFE Mountain (Hafþór Júlíus) Hafþór is an Icelandic professional strongman who plays the Mountain. He’s 6’9” and eats over 10,000 calories a day. Prev Next Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32