Darth Soverus was a Dark Lord of the Sith belonging to the Sith species (identified as male), who was a member of the Dark Council under the Emperor and served the reconstituted Sith Empire.
The Sith seer Spindrall encountered him at some point during his life, foretelling the events surrounding his demise. Soverus, the sole Council member present on the planet in the year 3637 BBY, met his end during the Korriban Incursion when a Republic strike team eliminated him, fulfilling the prophecy as he fought to safeguard the Chambers from desecration.
An accomplished lightsaber combatant, Darth Soverus employed the Jar'Kai style in his battle against the Republic strike team within the Dark Council chamber located on Korriban. He also demonstrated proficiency in telekinesis, as evidenced by his ability to guide a thrown lightsaber and execute Force choking.