The B-NK Series Subversion Droid was an espionage droid model produced by the Shroud, a freelance spy during the Galactic War. Manufactured in the Shroud's factory on Nar Shaddaa, the B-NK Series appeared to be an ordinary protocol droid, but possessed hidden vibroblades, missile launchers, and blasters. B-NK1, one of the Shroud's lieutenants, was a B-NK Series, and the Shroud planned to disseminate the B-NK droids throughout the galaxy.