Anathemos existed as a male Human Sith Lord within the reestablished Sith Empire.
Lord Anathemos found himself stationed on Taris at the Empire's base during the era of the Cold War. While there, he sought a holocron, but his efforts proved fruitless. A Sith Inquisitor, however, located the artifact and presented it to him. Anathemos, suspecting a ruse, believed the Inquisitor intended to ensnare him in a trap. The Inquisitor proposed trading the holocron for Anathemos' assassins, aiming to sway Ashara Zavros toward the dark side.