After the war between the Republic and the Separatists began, Count Dooku converted Tyris to his cause with the promise of letting him access a Sith holocron Dooku had stolen from the Jedi Temple. This holocron had been one that the famous Anzat Dark Jedi Volfe Karkko often accessed.
Some time following the Battle of Praesitlyn, three Jedi found the training camp and the nascent Jensaarai. Nejaa Halcyon, Ylenic It'kla (who referred to Tyris as Nightsweat), and one It'kla called "Desertwind" (actually Obi-Wan Kenobi) attempted to turn the Dark Jedi from their path, but were rebuffed. Attacked, the Jedi squared off against Tyris and his companions and battle was joined. "Desertwind" managed to kill his opponent, the apparent leader of the Jensaarai, and Ylenic slew the Dark Jedi he identified as "Dustrose."
Halcyon, however, was less fortunate than the others. Tyris took advantage of Halcyon's lack of telekinetic powers and ran him through. Before succumbing to his injuries, Halcyon drained the energy out of Tyris's lightsaber and used the Force to break every bone in his body, killing him. The release of dark side energies at the deaths of the three Jensaarai leaders collapsed the structure where the rest of the Jensaarai were dwelling, killing all but four of the apprentices. The survivors included the wife of one of Tyris' apprentices, the woman who would later become the Saarai-kaar of the Jensaarai.
After the declaration of the Empire, Obi-Wan Kenobi journeyed to Tatooine in order to bring Luke Skywalker to his uncle and aunt. On Nar Shaddaa, he encountered Sukarr's daughter, Mei, who was determined to have her revenge on the man who killed her father.
The Saarai-Kaar rebuilt the Jensaarai, but they were unable to comprehend the Sith writings of Larad Noon, and developed practices that only skirted the dark side of the Force without embracing it. The Jensaarai would eventually become allies with the Jedi Order, and would be considered as Gray Jedi by the New Jedi Order.
- The New Essential Chronology
- The Essential Reader's Companion