Darth Xyster (Cail's Empire)

"You Jedi are all the same. To use the Force is not to know it. You must embrace it, become it. When you experience the pain I have felt, the Force will fill your wounds. Because of this, I am unstoppable."

- Darth Xyster to Jedi Knight Allanar Gabbett, 12 ABY

Darth Xyster, the Lord of Suffering, was a male Sarkhai Sith Lord who was the apprentice of Darth Ominus for an extended period of time. Xyster served as an admiral and general during the Galactic Civil War on the side of the Infinite Empire of the Sith.

Born one of the few non-natives on the planet of Togoria to a family living in a small immigrant colony on the planet, the man that eventually became Darth Xyster lived a normal and carefree childhood. At the age of six, Xyster was sent away from Togoria from his parents, merely moments before the Republic bombarded the planet and killed millions. One of the few people to escape the planet unharmed, Xyster fell into despair and anger. Sometime later, he, along with his Force sensitivity, was discovered by Darth Ominus, who took him in as his Sith apprentice.

Xyster was known, even before the Infinite Empire's invasion of the galaxy in 10 ABY, as a particularly hate-filled Sith Lord. While much of this anger stemmed from the loss of his parents at a young age, it also came from the abuse he endured while training to become a Sith. While leading Sith troops in a campaign to capture a planet in the Unknown Regions, Xyster suffered severe scarring and burns to his face and upper torso, while also losing his right arm below the elbow. Forced to use a mask and minor medical equipment, his pain and humiliation drove him to further lengths to harness and embody the dark side of the Force. Some time before the Infinite Empire's invasion of the galaxy, he began styling himself as the Lord of Suffering.

Behind the scenes
Xyster is another word for a surgical tool that scrapes organic matter off of bones.