A Dark Jedi, who was a Human male, served within Darth Malak's Sith Empire. Malak had recently been proclaimed the Dark Lord of the Sith in 3956 BBY. During that time, this Dark Jedi was part of a Sith battle fleet under the command of Darth Bandon, who was Malak's Sith apprentice. This fleet ambushed and boarded the Republic _Hammerhead_-class cruiser Endar Spire. Their mission, given by Malak, was to capture Jedi Knight Bastila Shan alive, due to her powerful abilities with battle meditation. During this boarding action, the Dark Jedi engaged in a duel with a Jedi Master in a corridor connected to the ship's bridge, where he ultimately perished.
A male Human functioned as a Dark Jedi and gained membership in the Sith Empire of Darth Malak. Malak had formerly been the apprentice of Darth Revan and had declared himself the Dark Lord of the Sith during the Jedi Civil War. In 3956 BBY, this Dark Jedi was a component of a Sith battle fleet that was commanded by Darth Bandon, Malak's Sith apprentice and Shadow Hand. This fleet ambushed and boarded the Republic Hammerhead-class cruiser Endar Spire above the planet Taris with the goal of capturing Jedi Knight Bastila Shan, whose expertise with battle meditation was highly desired by Malak.
During the ambush, the Dark Jedi encountered a Jedi Master in the hallways leading towards the Endar Spire's bridge and engaged her in lightsaber combat. Revan, suffering from amnesia, and Trask Ulgo, two Republic soldiers, observed the conclusion of the duel, which ended with the death of the Dark Jedi. However, the Jedi Master also met her end soon after when the wall section behind her was destroyed by heavy fire from the Sith fleet.
As a member of the Sith Empire under Darth Malak, the Dark Jedi carried a red lightsaber and wore a suit of Sith armor. Despite his lightsaber skills, the Dark Jedi was unable to prevent his demise at the hands of the Jedi Master.
The Dark Jedi initially appeared as a non-playable character in a cutscene within the 2003 Star Wars: Knights of the Old Republic video game. He was later briefly mentioned within Prima Games' Knights of the Old Republic strategy guide.