Xal Doon (Destiny)

Xal Doon was a male Kel Dor apprenticed to the Sith Master Darth Saivus. Born on the helium-based world of, Doon was brought up in a secret within the  that worshiped the ancient Sith Lord. His parents saw pain as something that should be embraced and frequently tortured their son in order to indoctrinate this belief into him. The constant torment eventually drove Doon over the edge and he obliterated his parents in a blast of Force energy. Fleeing Dorin, Doon was soon drawn to the Sith world of Korriban, where he was found by Darth Saivus in the middle of an errand for the Dark Lady Sedriss. Sensing the young Kel Dor's turmoil, Saivus took Doon under his wing and helped him control his emotions.

Despite everything his master had done for him however, Doon ended up turning against Saivus and the other Sith Masters and joined Varon Krul's coup. He eventually met his end on the Vanguard at the hands of the Knights of Ren.