Thistleborn was a loyal member of the Central Committee of Grand Moffs.
At a secret conference with the self-proclaimed heir to the Galactic Empire, Trioculus, Thistleborn recommended that a new Imperial city-seat should be established on the planet, Bespin. The recommendation was lacking any strategic value and was more closely tied with Thistleborn's personal desire to take control of Cloud City. Trioculus rejected the recommendation.
- A Guide to the Star Wars Universe, Second Edition
- A Guide to the Star Wars Universe, Third Edition
- The Complete Star Wars Encyclopedia