theyre xanise. theyre part of a species of carnal humanoid creature that must be maintained on a specific drug or they cannot be controlled
if kept off of a substantial supply of the drug (called cathilositine) their carnal and predatory impulses will not be contained, and they become extremely hard to subdue, thus heavy surveillance is kept on most so they can be kept dosed up

ehhhhhh ill put more thought into this later
did you knowyou cant type tags on a french keyboard this is a problem