Galactic History 56: The Brotherhood of the Sith
The Jedi still hoped to save their fallen brother Ulic Qel-Droma, who had become leader of the evil Krath cult. Ulic's close friend Nomi led a second rescue mission to the city of Cinnagar to bring him home. But again Ulic resisted, unleashing his vast armies until the Jedi were forced to withdraw.
It was then that the Dark Jedi Exar Kun arrived at Cinnagar's royal palace. From Yavin Four, Exar Kun had sensed Ulic's growing dark power and saw him as a threat. The two men clashed in a ferocious duel until the spirit of Marka Ragnos, a long-dead Sith Lord, appeared to them.
Ragnos commanded Ulic Qel-Droma and Exar Kun to join forces; together, they could bring about the long-prophesied Golden Age of the Sith. With Exar Kun as Dark Lord and Ulic as his apprentice, the Brotherhood of the Sith was born.
Galactic History 57: The Brotherhood's Power Grows
United as the Brotherhood of the Sith, Exar Kun and Ulic Qel-Droma set about gathering their strength. Exar Kun sought converts to his new Sith Order among the Jedi on Ossus, killing Master Odan-Urr to claim a powerful Sith holocron.
Focused on strategy, Ulic contacted the Mandalorians, whose leader, Mandalore, had challenged the Krath cult’s rule of the Empress Teta system. Ulic defeated Mandalore in a duel, and the Mandalorians rallied under his banner.
Exar Kun also gave Ulic a terrible weapon–the Dark Reaper, which was capable of drawing out the life essence of an entire army. Ulic tested the Dark Reaper against Republic troops on Raxus Prime, killing hundreds. With the Dark Reaper, Mandalorian Crusaders, the Massassi warriors and Exar Kun’s own horrific alchemical creations, the Brotherhood of the Sith was finally ready to challenge the Republic.
Galactic History 58: Ulic's Trials
The Brotherhood of the Sith was ready to strike. The fallen Jedi Ulic Qel-Droma, the Sith sorceress Aleema and Mandalore gathered their armies to attack Coruscant. But they underestimated Coruscant’s Jedi defenders. The Brotherhood’s forces were repelled, and Ulic was captured. Ulic was taken to the Senate tower to stand trial.
But the Jedi Master Vodo Siosk-Baas sensed that Ulic hadn’t acted alone, that Siosk-Baas’s old student, Exar Kun, was involved. During the trial, Exar Kun himself marched into the Senate tower with his Massassi warriors. He subdued the assembly with his Force abilities and humiliated the Supreme Chancellor.
Vodo Siosk-Baas then entered, challenging his former pupil. Exar Kun’s unusual double-bladed lightsaber and dark powers prevailed, however, and Siosk-Baas was killed. Exar Kun and Ulic then left Coruscant and returned to Yavin Four to prepare for the next battle.
Galactic History 59: Aleema's Fate
Treachery is the way of the Sith. Ulic Qel-Droma’s capture on Coruscant had been engineered partly by his ally, the Sith sorceress Aleema Keto: she had ordered Mandalore to withdraw their forces at a critical moment. However, after Mandalore helped to rescue Ulic from Coruscant, he secretly told Ulic everything. Aleema’s fate was sealed.
Feigning ignorance, Ulic continued with the Sith Brotherhood’s plans. Using Naga Sadow’s ancient battleship, the Corsair, they planned to lure the Republic fleet into the Cron Cluster and use the Corsair to destroy its suns, annihilating the fleet. Aleema took the Corsair into the Cron Cluster and activated the superweapon, but Ulic had deliberately not warned her of the consequences.
The blast annihilated the entire Cron Cluster in a supernova, sending a shockwave toward the Jedi world of Ossus. The Corsair itself was consumed, taking Aleema with it.
Galactic History 60: The Destruction of Ossus
Text from the game:
The Brotherhood of the Sith had annihilated the Cron Cluster in a supernova, sending a massive shockwave towards the planet Ossus. Home to the Jedi for countless generations, Ossus safeguarded vast libraries and storehouses of artifacts. As the Jedi scrambled to save their treasures from the coming cataclysm, the Sith Brotherhood leaders Exar Kun and Ulic Qel-Droma arrived to raid the planet.
Exar Kun managed to claim a number of notable Jedi artifacts. Meanwhile, Ulic fought against the Republic and Jedi forces only to be challenged by his own brother, Cay. The two brothers fought until Ulic finally struck Cay down. The shock of his brother’s death left Ulic stunned with horror.
The Jedi Nomi, who had once loved Ulic, was overcome with grief and used her tremendous powers to somehow sever Ulic’s connection to the Force. Left powerless, Ulic wept at what he had become.