Repeat Rob's order about villain (9)
I believe the answer is:
reprobate
'villain' is the definition.
(I've seen this before)
'repeat rob's order' is the wordplay.
'order' indicates an anagram.
'repeat'+'rob'='repeatrob'
'repeatrob' is an anagram of 'REPROBATE'.
'about' is the link.
(Other definitions for reprobate that I've seen before include "Censure" , "corrupt" , "17 [WRONGDOER]" , "Villain" , "Sinner" .)