Dwayne Johnson is a huge movie star. The Rock has made some of the biggest blockbusters of recent memory, but he’s never done anything quite like The Smashing Machine. The movie, which will see The Rock star as Mark Kerr, an early UFC champion, is unlike anything we’ve seen him do, perhaps ever, but Johnson says that’s exactly why he made it.

Dwayne Johnson stars as former wrestler and UFC star Mark Kerr in a new trailer for Benny Safdie's "The Smashing Machine."

Dwayne Johnson’s dramatic transformation in the upcoming UFC biopic The Smashing Machine has stunned fans and critics alike, sparking early Oscar chatter following the trailer’s release. The movie focuses on Mark Kerr’s life and career.