"Lion King” villain (4)
I believe the answer is:
scar
'lion king villain' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for scar that I've seen before include "Effect of unpleasant experience" , "Mark from a wound left on the skin" , "Stain" , "Fish" , "Nasty mark" .)