A new trailer reveals John Rambo, voiced by Sylvester Stallone, is the latest character to join the iconic game series. Rambo joins Rain and Mileena as part of the Kombat Pack 2 downloadable content. which comes out Nov. 17 in addition to 'Mortal Kombat 11 Ultimate.' Gamers who own the title on PS4 and Xbox One will get free upgrades to PS5 and Xbox Series X. According to CNET, the latest addition of fighters as part of the downloadable content brings the count to 37 playable characters. Both the Kombat Pack 2 and the Ultimate version of the game will be available to preorder next Thursday, but pricing is not yet known.