I'm wondering if Jason Mamoa has already been typecast. If you're currently watching HBO's Game Of Thrones, you'll see Mamoa as a character not far from that of Conan; a huge, lumbering warrior who doesn't speak all that much. Regardless, going by this new trailer for director Marcus Nispel's Conan The Barbarian, Mamoa seems to have slipped into the role quite comfortably. As well as that, the effects look decent, the creature design seems pretty nice and the supporting cast is actually really solid. Joining Mamoa is Ron Perlman (Hellboy), Stephen Lang (Avatar) and Rose McGowan (Grindhouse). Check out the trailer below! And the awesome one-sheet below that!