Volteron is the home planet of the Volterite Aliens. The surface consists, at least in part, of ice and lava. Kal Wardin, Rufus and Yelena travelled there to retrieve the 3rd Judger artifact, which had been stolen by the Volterites. In the process, they discovered the Kar'rak which lived on the planet and attacked them.
Volteron is currently plagued with civil war, with the rebels fighting against the Overseer and his loyalists. A known rebel member is Maz' Rah, who was a major character in N.O.V.A. 3. the Rebellion's exact agenda or objective is unknown however, a common saying among them is "For Volteron".