This Star Wars t-shirt features an image of a probe droid, a Galactic Empire droid that was used for reconnaissance. In the 1980 blockbuster Episode V - The Empire Strikes Back, the Rebel Alliance moved their headquarters to the icy planet of Hoth. The Galactic Empire sent probe droids all over the galaxy to locate the Rebels' new base. With the help of probe droids, the Empire were able to locate and destroy the Rebels' Hoth base.