"The Lion King" villain (4)
I believe the answer is:
scar
'the 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 "Mark left on healed tissue" , "evidence of damage" , "nine [AL CAPONE] had to face" , "area of wound" , "Mark of healed cut" .)