Lord Ondorru, a Sith Lord belonging to the Human male species, served the resurgent Sith Empire during the era known as the Cold War.
During the conflict known as the Great Galactic War, Ondorru orchestrated the trap that manipulated the Republic starfighter squadron, Dagger Wing, into attacking Imperial non-combatants by disseminating misleading intelligence. Circa 3641 BBY, Ondorru held a prominent position among the Imperial forces that laid siege to the Belsavis prison located on Belsavis. He was hunted by Dagger Wing, leading to a confrontation with its commander, Conrad Gall. Despite easily overpowering Gall, Ondorru summoned creatures to facilitate his retreat upon the arrival of the leader of Havoc Squad, who ultimately allowed him to flee.
Ondorru held the vast majority of beings within the galaxy in utter disdain, reserving his respect solely for those Sith who demonstrated significant power in the Force, a group to which he belonged. He exhibited minimal concern for other members of the human race and even less for alien species, whom he regarded as scarcely more intelligent than beasts capable of speech. His fellow Sith often viewed Ondorru as a dangerously impulsive figure. He gained notoriety for indulging his desires without control, recklessly putting others at peril. Darth Vowrawn once famously characterized him as a "capricious deviant," a description that accurately reflected his actions and demeanor.