The Strangler is a chaos entity worshipped by this cult. The cult has been outlawed in every major civilization and cultists are hunted wherever they may be. Still their services can be purchased by those who know where to look, yet only the desperate seek to do so, for more than once a crazed strangler cultist has been known to turn upon his employer. Often these assassins are no more than rambling madmen met in dark alleys or sleeping in rags in the gutter. If they cannot get any assignments, they make their living through murder robbery.
The cultists use a strong narcotic* when they perform their ritual killing and they wash their hands in goat blood before the kill. Such are the ways of the cult and such are the teachings of the Mad Strangler. The narcotic lends them unnatural awareness and the blood sanctifies their hands. The stranglers always strangle with their bare hands, and the strength in their sinewy arms is legendary.
*The narcotic they use is called Khamot and is drunk before they bathe their hands. It makes them unnaturally aware and long time usage often result in psychotic black outs. Of course, the strangler cultists ain’t exactly stable in the first place.