Crossword Genius

Girl men upset is mischief-maker (7)

Ross

I believe the answer is:

gremlin

'is mischief-maker' is the definition.
(magical creature)

'girl men upset' is the wordplay.
'upset' indicates an anagram.
'girl'+'men'='girlmen'
'girlmen' is an anagram of 'GREMLIN'.

(Other definitions for gremlin that I've seen before include "Impish troublemaker" , "One sabotages" , "Pixie" , "Bug (in engine)" , "Cause of unexpected mechanical problem" .)

I've seen this clue in The Sun.
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