Leonard, characterised as an eerie trekker (5)

I believe the answer is:

nimoy

I'm a little stuck... Click here to teach me more about this clue!

But I can't explain it at all! Could you help me understand?

(Another definition for nimoy that I've seen is " Leonard --, Star Trek actor".)

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.