At some point after the Galactic Empire landed on the homeworld of the Stenax species, Stenos, several members of the species travelled off-world as part of a plan. They placed operatives on multiple worlds, including Cilpar, to study the species of the galaxy and evaluate those suitable for conquest.
Cilpar was liberated from the Galactic Empire by Rogue Squadron. The planet was held by the Empire when Rogue Squadron set up a base in the mountains west of the capital, Kiidan, after the Battle of Endor. A simple mission turned deadly when they ran into a TIE Fighter ambush. After a long battle, Moff Boren Tascl and Governor Norquest were overthrown.
It later became a hiring ground for mercenaries. Lando Calrissian tried to hire the Soskin Guard there.
- Star Wars Handbook 1: X-Wing Rogue Squadron
- "The University of Sanbra Guide to Intelligent Life: The Marvel Series" — Star Wars Gamer 1
- The New Essential Guide to Characters
- The Official Star Wars Fact File126
- The Complete Star Wars Encyclopedia
- The Essential Atlas
- The Forgotten War: The Nagai and the Tofs on Hyperspace