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