- Elite Force. Stealth unit. Immune to morale attacks - With Polymorphine, Callidus can give the illusion of being an ally, forcing enemies to cease fire - Callidus uses their abilities to other races, usually by possessing them and taking finally their place - Operating independently on battlefield, Assassins cannot capture objectives or get into transport - Very effective against Infantry, and Commander - BEWARE ! Only one Assassin is available at a time: Eversor or Callidus