Director of "Thor: Ragnarok," Taika Waititi, will play Korg in the movie.
Waititi will play the eight-foot-tall rock creature, who befriends Thor during his layover on Sakaar, reported Entertainment Weekly.
"Obviously, being made of rocks, we wanted somebody like The Rock to play him, but there wasn't enough chicken or salmon in Australia to sustain he and Chris," joked Waititi.
"I never thought I'd be playing the most lovable character in the film," he added.
The filmmaker has made a habit of appearing in his films, and even had a role in DC's "Green Lantern".