In the footage, which you can watch above, Dwayne Johnson looks unrecognizable as MMA fighter and two-time UFC Heavyweight Tournament Champion Mark Kerr. We see Kerr in multiple fights, as well as talking about his ethos towards the sport. Johnson, of course, started out as a professional wrestler, so this seems like a role that was made for him.

Dwayne "The Rock" Johnson took on the role of former wrestler and MMA fighter Mark Kerr in The Smashing Machine and completely transformed himself — to the point that he's nearly unrecognizable in the promo.