Arvus Reintrot

A master assassin within the Empire specializing in poisons and conversation to finish of his target.
One of his favorite ways of ending the life of a contract is by consuming lethal potions, of which he has trained his body for years to resist the effects of, so deadly that even the gaseous breath of the consumer is lethal.
As an unrivalled expert of poisons, he can determine the length of time the exhaling of the poison gas takes to kill the target , so a friendly conversation can turn into a writhing, squirming, beg for medicinal mercy, only to find itself at the end of life’s line.
He is also a master of disguise, as well as theatrical displays whenever he adopts a new persona. This has rendered his existence nearly... non-existent. No one knows who is committing all these assassinations, and, through his hard work and determination, they hopefully never will.