Nanogene droids represented an extremely experimental type of robot, characterized by their microscopic dimensions. These droids were designed to interact with living beings at a cellular level. Upon introduction into the body, they would target the organism's genetic blueprint, essentially rewriting it. Consequently, the 'recipient' might experience highly peculiar adverse effects stemming from the alterations at the molecular level. The program responsible for developing these droids was discontinued near the end of the New Order because the droids were considered prohibitively expensive for broad implementation.
A scientist named Uris independently revived the droid production, utilizing his personal resources. These droids were programmed to modify the genetic makeup of the population of Voorsbain, transforming the inhabitants into unthinking zombies within a three-week timeframe. Their release onto the vulnerable planet was narrowly averted by agents of the Rebel Alliance.