Voss

Voss is some remote planet with two major species, the Voss and the Gormak. At some point in the ancient past, a group of Sith, led by Darth Nobody, arrived on the planet, and started to enslave the native Gormak. Eventually, a group of Jedi arrived there and started to train the Gormak in the ways of the force (this was a rare period of time where the Jedi weren't always smoking weed). This eventually caused a mutation among the Gormak, forming the Voss species in the process. It was also around this time that a dark side entity called Sel-Makor formed in some Sith ruins and started to feed off the conflict on the planet. Eventually the Sith were wiped out and the Jedi either left or died. The Voss then made a city on top of a mountain called Voss-Ka, while the Gormak started to roam the plains. Both species were in eternal war for the following millennia. Eventually, the Sith Empire discovered the planet and sent a fleet to conquer the place. The fleet, upon arriving in Voss' orbit, blew up and unbeknownst to everyone, Beagle Force had the fleet destroyed, for they also had an interest in Voss. Soon both the Republic and the Sith set up embassies in Voss-Ka and tried to persuade the Voss to join them. A few years later, the Eternal Empire would invade and this event caused both the Gormak and Voss to join together. The invaders were driven off by Jeedai-bobb. Millennia after this, Voss became simply just another mining world.

The Nightmare Lands
The Nightmare Lands were an area of Voss that was corrupted by the influence of Sel-Makor. The entity's influence had a tendency to drive almost all who entered it's domain insane, and in some cases, made them lose their face or go transparent!