 Khan appears in the 2013 film Star Trek Into Darkness , taking place in the alternate continuity established in Star Trek ( 2009 ) . While the character ’ s backstory remains the same , Khan is revived by Starfleet Admiral Alexander Marcus rather than the crew of Enterprise . Marcus anticipates a war with the Klingons , and forces Khan to develop warships and weapons for Starfleet under the cover identity of " John Harrison " , holding Khan 's shipmates hostage . These developments include advanced long @-@ range torpedoes and the warship USS Vengeance . 
