Patch-4 was a refuse world; much like Raxus Prime, it was used to dump unrecyclable machine parts and various other kinds of garbage. Orion Ferret used the planet to discreetly store illegal goods. He sold some TIE/LN starfighters to the Rebel Alliance, and Lando Calrissian and Luke Skywalker ventured to Patch-4 to retrieve them. While on the planet, they were saved by Serja Kesselrook from Ceasar, a Watchbeast put on the planet by Ferret to guard his stash.