Ortosin was a Human male Sith apprentice of the Sith Empire. During the Cold War with the Galactic Republic, he was sent by his master, Darth Skotia, to Korriban to relieved an ultimatum to Lord Zash's new Apprentice, threatening the apprentice not to travel to Dromund Kaas. The apprentice refused to be intimidated and decided to introduce Ortosin to the Dashade Khem Val. One of Ortosin's cohorts became frightened, having heard the Dashades devour Force-users and spit out their bones. Ortosin refused to be intimidated and attacked him along with two other thugs, eventually all being killed by the apprentice.
- Star Wars: The Old Republic (First appearance)