Orailus was a Human of the male gender. He worked as a medic within the ranks of the reconstituted Sith Empire throughout the Cold War period, which was a time of conflict with the Galactic Republic.
In the Valley of the Dark Lords located on Korriban, during the era of the Cold War, Lieutenant Devron sought Orailus out, needing medical attention after a grave robber attack on him and his squad in a tomb. Orailus cautioned Devron that he would be sorry if any treasures had been stolen.