While on a mission on the planet of Bespin, Rillian came across Kullervo Tinren and Darth Cahdek encased in carbonite, accidentally setting them free. Darth Cahdek was too weak to fight off Rillian, and fled. Caspian then took Tinren under his wing, further training the young Zabrak in the ways of the Jedi.
By 984 BBY, Rillian was a Master on the Jedi Council.
- Betrayal (first appearance)