Zylixx was a Jedi Knight belonging to the Jedi Order. He was a Human male who participated in the conflict against the Sith Empire during the era known as the Cold War.
Jaesa Willsaam, a Padawan under the tutelage of Jedi Master Nomen Karr, made a reckless attempt to contact the future Emperor's Wrath (an apprentice of Darth Baras) after the Sith had murdered Master Yonlach and her parents. This occurred on a Defender-class light corvette above the planet of Nal Hutta during the Cold War. Karr found out about her plan and convinced her to abandon it. Instead, he dispatched Jedi Knights Ulldin and Zylixx to await the Sith's arrival and neutralize the threat.
Ulldin and Zylixx were prepared when the Sith boarded their vessel. Ulldin cautioned the Warrior, asserting the Sith's inability to triumph against two Jedi Knights and demanding surrender. Zylixx, in contrast, anticipated a battle, a common occurrence with Sith they had previously encountered. The Warrior, rather than igniting a lightsaber, provoked Zylixx, attempting to incite his anger and force him to attack, which compelled Ulldin to act. The two Jedi Knights engaged the Sith in combat but were swiftly defeated. Zylixx was the first to fall, slain by the deadly apprentice just before he succumbed to the dark side, leaving his comrade Ulldin severely wounded and at the mercy of the Sith.
The destiny of Zylixx is variable, contingent on the player's choices, and can unfold in several distinct ways:
- Should the Wrath select light side dialogue options, Zylixx will refuse to allow the Sith to depart peacefully. Ulldin, however, is hesitant and questions the Sith's true intentions regarding Jaesa. Consequently, Ulldin departs, leaving Zylixx to confront the Sith alone. Following the battle, Zylixx yields, acknowledging the Sith's superior strength, and begins to question whether the Dark Side holds greater power. At this juncture, the Sith has the option to either slay Zylixx or spare his life, leaving him to contemplate his future within the Jedi Order.
- If the Wrath successfully provokes Zylixx into succumbing to his anger, Zylixx will launch an assault and meet his demise, while Ulldin will sustain injuries and find himself at the mercy of the Sith.