Kyrus, a Sith Lord, was a male Human and a Sith Lord of the reconstituted Sith Empire. He held a position in the Empire during both the Cold War and the Galactic War. His assignment was to eliminate the key figures of the Rift Alliance before their return to the Galactic Republic. Kyrus formed an alliance with Augin Blaesus, a Child of the Emperor, and together they successfully captured the royal family of Sarkhai. However, their scheme was ultimately foiled by the arrival of the Barsen'thor, who brought about the demise of both Kyrus and Blaesus.
Lord Kyrus possessed exceptional lightsaber skills, showing proficiency in the Jar'Kai combat style. This was evident during his confrontation with the Barsen'thor of the Jedi Order.