Biography
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.

Acting
Reykjavík, Iceland
Born
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.

Masters of the Universe· 2026
Goat Man

Taming The Beast· 2026
Self (archive footage)

Finally Dawn· 2024
Thot

Belle· 2023

Eddie Hall: The Beast v The Mountain· 2022
Thor "The Mountain"

Eddie Hall: The Beast vs. The Mountain· 2022
Self

The Northman· 2022
Thórfinnr Tooth-Gnasher

Thor vs Eddie· 2022
Himself

Game of Thrones: The Last Watch· 2019
Self

Pharaoh's War· 2019
Frank

Strongman: Beyond the Mountain· 2019
Self

Fullsterkur· 2018
Himself

Kickboxer: Retaliation· 2018
Mongkut

Operation Ragnarok· 2018
Big John - Icelandic Viking Squad

Born Strong· 2017
Self

Game of Thrones The IMAX Experience· 2015
Gregor 'The Mountain' Clegane

NXT TakeOver: Unstoppable· 2015
Himself - Audience Member (as Hafthor Bjornsson)

The Commissioner of Power
Himself