Capable of infiltrating even the most highly-secure facilities, Callidus Assassins use shape-altering drugs to appear in almost any form they want, whether a beautiful human woman or a slightly less pleasing to the eye, hulking Ork. Preferring to attack with the element of surprise that this affords them, they are rarely found in the midst of battle, rather attacking suddenly and disappearing immediately. Panic, terror and confusion are their calling cards.