Pantomime character regularly taking in victims (7)
I believe the answer is:
buttons
'pantomime character' is the definition.
(I've seen this before)
'regularly taking in victims' is the wordplay.
'regularly taking' becomes 'on' (as in 'on drugs').
'in' is an insertion indicator.
'victims' becomes 'butts' (as in the butt of the joke).
'on' going within 'butts' is 'BUTTONS'.
(Other definitions for buttons that I've seen before include "Fasteners; panto pageboy" , "Friend of Cinderella" , "pantomime character" , "may be at work in hotel" , "Fasteners; panto role" .)