 Harve Bennett , executive producer for Star Trek II , chose Khan as the villain for the film . To reflect the time spent marooned on an inhospitable world , Khan was given a costume that looked as though it had been scavenged from different items and showed off Montalbán 's physique . Montalbán 's portrayal has been positively received by critics and fans ; Khan was voted one of the ten greatest film villains by the Online Film Critics Society . 
