Robert Oberst (born December 20, 1984) is an American professional strongman competitor of the 2013 World’s Strongest Man and 2014 World’s Strongest Man competitions.
He stands 203 cm (6 ft 8 in) tall and weighs 181 kg (399 lb)! Royce is roughly 80kgs (180lbs).
In this video, he is pummeling and training with MMA legend Royce Gracie:
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Working out (having fun) with @robertoberst world strongest man @alexdiciero