Hafþór Júlíus Björnsson
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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.
Known for
Credits
Masters of the Universe (2026)
as Goat Man
The Northman (2022)
as Thórfinnr Tooth-Gnasher
Game of Thrones: The Last Watch (2019)
as Self
Kickboxer: Retaliation (2018)
as Mongkut
Pharaoh's War (2019)
as Frank
Game of Thrones The IMAX Experience (2015)
as Gregor 'The Mountain' Clegane
Taming The Beast (2026)
as Self
Finally Dawn (2024)
as Thot
Operation Ragnarok (2018)
as Big John - Icelandic Viking Squad
Born Strong (2017)
as Self
Eddie: Strongman (2015)
as Self
NXT TakeOver: Unstoppable (2015)
as Himself - Audience Member (as Hafthor Bjornsson)
Thor vs Eddie (2022)
as Himself
Belle (2023)
Actor
Eddie Hall: The Beast v The Mountain (2022)
as Thor "The Mountain"
The Commissioner of Power (2021)
as Himself
Eddie Hall: The Beast vs. The Mountain (2022)
as Self
Strongman: Beyond the Mountain (2019)
as Self
Fullsterkur (2018)
as Himself