Thorbo was a high-ranking senior officer of the Galactic Empire, holding the rank of Major, and was assigned to Outpost D-34.
Maarek Stele, a pilot, once disabled the freighter Onece 3, which was transporting rebels. Consequently, the freighter was seized, and the captured rebels were confined in the station's brig. The rebels were then individually escorted to a quickly established interrogation room for questioning. In this room, Major Thorbo, together with Admiral Flanken, would use an interrogation droid to question the prisoners.
Thorbo possessed a very negative view of the Rebel Alliance. He once stated that the Rebel Alliance would be "crushed like the empty shell that it is," which caused the prisoners to resist. After Flanken introduced the interrogation droid, Thorbo displayed impatience, eager to begin the interrogation because he relished the idea of breaking the prisoners' spirits.