The Guardian Corps represented a group of war-robots utilized as part of the armed forces of Xim the Despot's empire. This contingent, consisting of a thousand war-robots, was conveyed aboard the treasure ship Queen of Ranroon to the planet Dellalt. Their mission was to provide security for the Treasure Vaults of Xim the Despot. The "Survivors," descendants of the original crew and guards of the Queen of Ranroon, provided upkeep and maintenance for the Guardian Corps on Dellalt.
During 2 BBY, Han Solo and Chewbacca found themselves on Dellalt, where they encountered the Guardian Corps. The Survivors repurposed these war-robots to combat a mining operation spearheaded by J'uoch. The ultimate downfall of the Guardian Corps occurred when their march across a bridge generated a harmonic resonance, leading to its collapse. The war-robots plummeted into the ravine beneath, resulting in their destruction.