The Chiss were a blue-skinned, near-human sentient species that possessed red eyes and dark blue hair. They hailed from the planet Csilla.
The Chiss Ascendancy was the governing body of the Chiss. Their domain was located in the Unknown Regions. They had little contact with the rest of the galaxy, and until Grand Admiral Thrawn’s ascent in the ranks of the Galactic Empire, their existence was regarded as mostly a legend even within the Unknown Regions.