Sienar Intelligence Systems

Sienar's line of military and intelligence droids are not available to the general public except at inflated rates on the black market. Instead Sienar Intelligence Systems (an arm of the giant Sienar Corporation) contracts directly with governments-especially the Empire. Their biggest seller even well into the New Jedi Order era, is the E522 Assassin model, although its use is (thoretically) heavily restricted in New Republic Space