Mrlsst was the only planet in the sector with an indigenous alien race. It was a moist and humid world, with terrain dominated by marshes and sandy swamps. Nearly everywhere, one could find the towering cosmopolitan greenstalk plants that grew all over the planet, except the poles. A thick asteroid field surrounded the planet, which was used for raw materials and was the location of several research stations. Mrlsst was the home of the famous Mrlsst Trade and Science Academy, the best university in the sector, and one of the best beyond the Core Worlds.