inflicter

noun

1. One who inflicts.

   “BLACKE PLUTOES GRIESLY DAME, Proserpine, the avenger of men, and inflicter of curses on the dead.”

   “At the core of their own hearts there stands an inflicter of no less agonies.”

   “But there is a further group of cases, and a very important group, on account of the light it throws on the essential nature of these phenomena, and that is the group in which the thought or the spectacle of pain acts as a sexual stimulant, without the subject identifying himself clearly either with the inflicter or the sufferer of the pain.”