- "As far as we are concerned, killing high-born Templar is an act of righteous justice! Let the rulers of Aiur feel what it's like to be hunted and driven from their homes! Let them suffer as we Dark Templar have suffered at their hands!"
- —Ulrezaj to Zeratul while on trial
Ulrezaj is thought to be the most powerful Dark Archon in Protoss history, comprised of the souls of seven Dark Templar. When Ulrezaj was young, he gained forbidden knowledge at Ehlna. He intended to use the knowledge to empower the Dark Templar and gain revenge on the Protoss of Aiur.
Ulrezaj used an artificial drug called Sundrop to enslave Khalai Protoss called the Tal'Darim, which changed their biochemistry. Ulrezaj also used a Xel'Naga AI during this task. Sundrop was found in the Xel'Naga temple of Shakuras, although that doesn't mean it was originally from there.
Ulrezaj created warped Khaydarin crystals consisting of Dark Templar and Zerg energy. He used these crystal to enslave and enhance his own"Zerg Brood". Using a similar process, Ulrezaj also successfully created his own Hybrids as well.
Physical Description Edit
As an energy being, only energy attacks could harm Ulrezaj. He could be injured by the plasma metamorphosis attack of scourges.
He appeared as a huge swirl of "glowing darkness". His outer nimbus created atmospheric effects such as wind and electricity. Despite his size, he was capable of moving "at the speed of thought".
Ulrezaj was capable of creating blasts of dark psionic energy, which destroyed creatures and objects in or near their path. Dark tendrils of shadow snaked on the ground from his position, attacking creatures they could reach.
Ulrezaj was capable of teleporting and flying a Xel'Naga spaceship. His very presence damaged the soil he traveled over.
Dark Archons do not normally last long, but Ulrezaj managed to control his power through the knowledge he gained at the Alys'aril; he could enhance his power in the caverns underneath Aiur by feeding on his followers, as well as with the unique combination of energy found at Ehlna.