HG-211 was a military droid with a masculine persona who served as the head of security for a droid community that dwelled on the moon Uffel in the Cularin system during the waning years of the Galactic Republic. Circa 31 BBY, the rogue protocol droid LN-73 fell to the surface of Uffel during a debris storm and set about sabotaging droid production facilities in the city X2-4. HG-211 hired the Heroes of Cularin, a group of freelance agents, to identify the source of the vandalism, and after LN-73 learned of the military droid's investigation, it incapacitated HG-211 via a power surge from a computer terminal. However, the agents defeated LN-73, and HG-211 was repaired.