Icelandic strongman Hafthor Bjornsson showed off his dominating power during a sparring session.
The 31-year-old, best known for his role as Gregor 'The Mountain' Clegane in HBO's hit series Game of Thrones, refused to hold back in the early stages against his unnamed opponent.
The 6'9", 425lbs actor would continue to force his opponent on the back foot and throw as many punches as humanly possible.
Bjornsson might not have exhibited any natural boxing techniques, but he stalked his opponent down and repeatedly launched wild punches when he backed him onto the ropes.
'The Mountain' largely dominated the fight until the end when his opponent took advantage of him gassing out.
The three-minute sparring took its toll on Bjornsson as he dropped to the floor exhausted.