Tervissis was a planet located within the Tervissis system of the Outer Rim Territories. It was the homeworld of two sentient species, the Tervigs and the Bandies. The two species were at war with one another, with the Tervigs subjugating the Bandies.
In the aftermath of the Clone Wars, Tervissis resisted the control of the New Order, and was counted among what were known as the Separatist holdouts. Circa 18 BBY, the Galactic Empire began the Listehol Campaign, an offensive against former Separatists, pirates, and slavers. The Imperial forces were led by Admiral Wullf Yularen and Captain Bannidge Holt. Though the Imperials were victorious on all other fronts, and made continuous assaults against Tervissis, they continued to resist Imperial control. It wasn't until five years later that the Empire finally conquered the planet.
- Planet of Twilight (First appearance)