Zombie Stormtroopers, nicknamed Death Troopers by both Imperial and Rebel soldiers, were units of Imperial Stormtrooper that were infected by a virus called The Sickness. Only two outbreaks involving Death Troopers were known to have existed, the first happening before the battle of Yavin onbord the Imperial Star Destroyer Vector, in which the infection later spread to an Imperial Prison Barge called the Purge a few weeks later. Another outbreak involving zombie Stormtroopers was on the planet Dandoran. Here more stormtroopers were infected, but this time they were intelegent enough to use blasters and fly ships to spread the infection to other planets, like Tatooine.