Lightning was an astromech droid with a masculine personality that worked in the Zero Angle, a bar in the Galactic Empire's Flight Base for the Bright Jewel Oversector. Shortly after the Battle of Yavin, he used his sonic emitter to break up a bar fight between Imperial Navy pilots and Imperial Army pilots. The droid then shocked the Army pilot Huck Trompo, who had been responsible for starting the brawl.