That’s an odd thing to reveal, since when fans think of the quintessential Star Trek villain, the character that likely comes to mind is Khan, who clashed with the crew of the Enterprise in both the original series and Star Trek II.
William Shatner says he was initially against the idea of revisiting Khan for Star Trek II.
Montalban reprised the role in Wrath of Khan, which was the sequel to Star Trek’s first feature film, Star Trek: The Motion Picture.