X-4

X-4 was part of a program to create a perfect assassin solely dedicated to the Commander. The program was created by an Imperial Commander Rezi Soresh to create an assassin that could assume any persona, fake emotions, and stop at nothing to achieve his goal and please the Commander.

X-4 was a human male tortured and brainwashed to forget his past completely and erase all emotions. X-4 malfunctioned and hung himself with a laserwhip.

X-4 is only mentioned in Star Wars: Rebel Force - Target