Antonyms of victim :
gainer, victor, winner, harmer, injurer, assassin, killer, murderer, gossip, gossiper, talebearer, tattler, tattletale, troublemaker, defamer, libeler, libelist, traducer, baiter, heckler, needler, ribber, taunter, tease, teaser, tormentor, torturer, derider, insulter, mocker, ridiculer, scoffer, scorner, caricaturist, lampooner, parodist, satirist.
Examples of usage:
The man stooped to raise his victim, but the attempt was beyond his strength. "The Scottish Chiefs", Jane Porter.
He still demanded to have his victim delivered up to him. "Isaac T. Hopper", L. Maria Child.
Then when all was ripe on the night following his supposed start for the Continent, the victim disappeared. "The Mynns' Mystery", George Manville Fenn.