Zalt (ゾルト星, Zoruto-sei) , known as Cooler No. 6 (惑星クウラNo. 6) under Galactic Frieza Army control, is a planet owned by Cooler. The original name of this planet (Zalt) is derived from "salt". Cooler No. 6 is nothing but water, and its inhabitants evolved from a species of amphibians. It is Neiz's home planet.