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Origins
All that is known of Nihilus's true beginnings is that he survived the Mandalorian Wars and assumed his dark persona on Malachor V.[5] Although his role in the wars is a mystery, it is very likely that he may have been among the faction of Jedi that defied the Jedi Council and followed Revan to war. In the Battle of Malachor V, the close of the conflict with the Mandalorian invaders, he was trapped on the planet by mass shadows along with most of the two fleets that filled the space around the planet, where the Mandalorians had committed all of their forces in a last attempt at defeating the Galactic Republic. The Jedi General that commanded the Republic fleet was a woman whose ties to Nihilus remain unknown, despite the belief of Jedi Masters such as Vrook Lamar and Kreia that the Sith Lord had learned to bond from the Jedi Exile in the crucible of the war. When the Exile gave the order to activate the Mass Shadow Generator, the superweapon conceived by Military engineer Bao-Dur killed all but a few of those who were crushed on the planet's surface. Drawing upon the Force, Nihilus lifted the Ravager beyond the mass shadows and left with it. At some point he visited the Trayus Academy, an ancient training facility located into the depths of the planet. He trained under Darth Traya with fellow Sith Lord Darth Sion, each of them honing different teachings of the dark side of the Force, until the three joined in the creation of the Sith triumvirate, styling themselves as unique titles such as the Lord of Hunger.
His hunger came from the practice of feeding upon the Force, something his Master perceived as detrimental to the goals of the Sith, but that would make him stronger for a time. He was a wound in the Force, and eventually his power grew beyond what Traya could match. He allied himself with Darth Sion and challenged her, and when she was stripped of her power and cast out, the Sith were left with no defined leadership and many factions, all seeking to take what little remained of Revan's Sith Empire.[1] After the dissolution of the Sith triumvirate, Sion and Nihilus went on their separate ways, each commanding their own minions against the Jedi, in a war of silence and shadow.