Star Trek character killed Heather with no comeback (7)

I believe the answer is:

klingon

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'star trek character' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'killed heather with no comeback' is the wordplay.
'killed' becomes 'k' (this might be a standard abbreviation I've not previously seen).
'heather' becomes 'ling' (synonyms).
'with' is a charade indicator (letters next to each other).
'comeback' says the letters should be written backwards.
'no' in reverse letter order is 'on'.
'k'+'ling'+'on'='KLINGON'

Can you help me to learn more?

(Other definitions for klingon that I've seen before include "One of a warlike species in Star Trek" , "Alien from Star Trek series" .)

I've seen this clue in the Sydney Morning Herald.

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