Character turning up with cops at the King's Head (5)

I believe the answer is:

spock

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

'character turning' is the definition.
The definition suggests a singular noun which matches the answer.

'up with cops at the king's head' is the wordplay.
'up with' is a reversal indicator (move letters in down clue up).
'at' means one lot of letters go next to another.
'head' indicates taking the first letters.
The first letter of 'kings' is 'k'.
'cops' back-to-front is 'spoc'.
'spoc'+'k'='SPOCK'

Can you help me to learn more?

(Other definitions for spock that I've seen before include "Star Trek Vulcan" , "aka Leonard Nimoy" , "Star Trek character" , "In terms of childcare, a revolutionary" .)

I've seen this clue in the Evening Standard.

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.