Android rebel

Android Rebels were androids used by Sharaz Jek. Jek perpetuated his rebellion with an army of advanced androids, armed with weapons supplied by gun runners. These androids were programmed to kill all Humans on sight unless they wore a belt plate emitting a particular frequency.

Jek also built more sophisticated androids, perfect duplicates of individuals used to infiltrate the ranks of his enemies and with the ability to see through walls. With over five million responses programmed into it's cortex, such an android was indistinguishable from the real thing. (DW: The Caves of Androzani)