Star Trek II: The Wrath of Khan was a success on the strength of its villain.
But William Shatner wasn’t sure a returning series villain was such a good idea.
Talking to IGN to promote the 35th anniversary celebration of the film, Shatner shared that he didn’t want to look to the series for inspiration at all for Star Trek II.
I recall that they began to talk about the second movie, and the talk began to be about what segment of the 79 [TV episodes] that we shot would be useful.
And I kept saying, why do we want to go to a segment?
Why don’t we invent something absolutely new?