Born on Dantooine, he went to Nar Shaddaa and joined the Exchange at sixteen years old, thus "earning" his cybernetics. At the age of nineteen, he was recruited by the Eagle to work in his terrorist network on the same planet, rising high in the ranks, due to his enhancements. The cell connected Jaarn to their communications center, relaying information on the patterns and codes they had. He was killed by an Imperial Agent Cipher Nine, who infiltrated VerveGen around 3643 BBY.
- The player can choose to slice his brain, and kill him for dark side points or spare him for light side points.