Daily Star's biggest headlines straight to your inbox!Hafthor Juliuss Bjornsson has shown off his massive transformation ahead of his bout with Canadian professional arm-wrestler Devon Larratt.Bjornsson is best known for his role as The Mountain in HBO's hit TV show Game of Thrones.However, Bjornsson is also a former winner of World's Strongest Man, and he has recently ventured into the boxing world to face off with Eddie Hall.But after that fight was postponed due to Hall's injury, Bjornsson took up a challenge from Larratt.And when they face off in the ring on September 18, Bjornsson will have a near four-stone weight advantage over Larratt.Bjornsson weighed in at 146.5kg ahead of the bout, 50kg lighter than he was when he took his first.
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