Synonyms to head hunter

Cain, apache, assassin, assassinator, bloodletter, bloodshedder, bravo, burker, butcher, button man, cannibal, cutthroat, desperado, eradicator, executioner, exterminator, garroter, gorilla, gun, gunman, gunsel, hatchet man, hit man, homicidal maniac, homicide, killer, man-eater, man-killer, manslayer, massacrer, matador, murderer, pesticide, poison, poisoner, slaughterer, slayer, strangler, thug, torpedo, trigger man