Tergos was a male Human Vice-Commandant of the InterStellar Regulators during the Galactic War. He was among those who were bought off by the Hutt Cartel prior to the Conquest of Makeb. However, as the planet came dangerously close to destruction, Regulators found less and less reasons to remain on the surface. Tergos and the others were paid extra by the Archon Szajin to stay, even as most of the civilian and Republic forces were evacuated. Szajin promised to prove that Makeb was stabilized, but was confronted and defeated by the Imperial hero who worked with Katha Niar to save the planet.
To prevent the Regulators leaking information about the Empire's involvement, they used their laser drills to bury the mercenaries in magma and rubble. Tergos declared them insane before his communications cut off.