Stallone antihero (5)
I believe the answer is:
rambo
'stallone antihero' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rambo that I've seen before include "28 film hero" , "Character relying on brute force" , "Stallone's he-man" , "Tough man (films)" , "Tough aggressive man" .)