Monox (Pyro II) is the second planet from the sun of the Pyro system. Nicknamed "Monox" for the deadly carbon monoxide in its atmosphere, it has a temperate climate, and was seen as a viable candidate for terraforming shortly after its discovery. However, its proximity to the system's volatile sun made it dangerous for Human habitation, and the United Nations of Earth (UNE) refused to clear it for terraformation, instead allowing corporations to harvest its natural resources. Undeterred by the potential risk, outlaws eventually took up residence on the planet when the last corporations pulled out of Pyro in the 26th century.