Dustil Onasi was the son of Morgana Onasi and war veteran Carth Onasi. He was taken by the Sith during the Bombing of Telos IV, and later trained at the Sith Academy on Korriban before turning away from the Sith and returning home.
Dustil was born on Telos IV and raised mostly by his mother due to his father's constant absence as a soldier in the Republic Navy. During the bombardment and destruction of Telos IV's surface during the Jedi Civil War, Dustil's mother was killed and he was assumed dead. In reality he had survived, but developed a strong dislike for both the Galactic Republic and his father for their inability to save Telos IV.
Some time later, a friend of Dustil's named Selene convinced him to join the Sith Academy on Korriban. He quickly became one of the more promising students there. He was strong with the Force and proficient in combat, and soon attracted the watchful eye of the academy's headmaster, Uthar Wynn.
While training, Dustil developed a relationship with Selene, who was also a student at the academy. This distressed Master Uthar, who felt that such an emotional entanglement would hinder his best student's progress. The conniving Sith Master secretly had the young woman murdered and then lied to Dustil about the occurrence.
During the Jedi Civil War Dustil was discovered by his father and Revan as he was training at the Sith Academy. Carth, hurt by the choices Dustil had made, tried to talk with him and convince him to turn away from the Sith. Dustil refused, still blaming his father for his mother's death, and believing the Sith to now be his true, caring family.
When Revan and Carth found a journal of Master Uthar's detailing the events of the treachery against a friend of Dustil's, they decided to show it to the young man as proof that the Sith were truly evil. With this newfound knowledge, an emotionally distraught Dustil was convinced to forsake the Sith and their teachings.
Dustil promised to eventually meet his father on Telos IV, where they could begin to repair their relationship. But before leaving the academy immediately, he decided to remain on Korriban to try and help as many of his friends as possible.
It is unknown if the reunion between father and son ever occurred, or what became of Dustil in the aftermath of the Jedi Civil War.
Behind the scenes
- Dustil (as well as the whole secondary quest) appears only if Carth has told the player about his family and afterwards the player visits a spaceport with Carth where they are informed about him.
- While the above is the canonical light side version, it is possible for the player to kill Dustil if the player is following the dark side path, or simply chooses the wrong dialogue options. Much like Juhani in the Dantooine Grove, aggressive comments will provoke Dustil into attacking you.
- In Star Wars: Knights of the Old Republic II: The Sith Lords, Dustil was supposed to make an appearance in the tomb on Korriban. Dustil would claim that he is a Jedi and turned his back on the dark side only to return to Korriban for reasons unknown even to himself. While inside the tomb, Dustil would claim to have encountered Carth twenty two times and killed him every time. While speaking with the Jedi Exile (who he believes is just another vision) he would cry for his father and ask why he left him. Dustil would then become enraged and attacks the Exile. However, the voice for the scene was never done, and was cut from the final version of the game. Instead there is a body labeled "Jedi Corpse" in the chamber with a datapad belonging to a Jedi named Nebelish. The designers never changed the textures for the corpse however, and it still clearly resembles Dustil.
- Star Wars: Knights of the Old Republic Handbook (Mentioned only)