Hafþór Júlíus Björnsson is a professional weightlifter and former silver medalist in the World’s Strongest Man competition. He also plays Gregor Clegane, aka The Mountain, possibly aka Ser Robert Strong (minor spoilerage, but not really) on HBO’s Game Of Thrones. He once declared himself the “future of strength.” I’m inclined to let him have that one.
Conor McGregor is currently the #1 contender in the UFC featherweight division, and even has a sort-of title. He holds an 18-2 lifetime record, and is currently training to fight champion Jose Aldo. Fighting a mountain is as good a way as any, I suppose.
Good on McGregor for avoiding the ole exploded-head trick, which Clegane is famous for.