Copper 9 was the former home planet of the Drones, as well as its Worker Drones.
After the core-collapse of Mimmio, it was believed that the rest of the Drones were still living on Copper 9 in peace by the Worker Drones still living. However, it was later revealed by The Lizards, masquerading as Arynn, that the planet was destroyed by the Lizardian Forces, thus leaving the ultimate fate of the drones unknown.
History
Copper 9 was the homeworld of the drones, and by extension JCJenson. Famous and wealthy humans such as the Tiffany family lived on Copper 9 in large wealthy manors and mansions. The planet was also the site of massive Worker Drone garbage dumps (one of which Elsa Tiffany loved to scavenge from), which humans would toss their destroyed and broken Worker Drone servants into when they no longer felt a need for them.
Prior to the explosion, the drones were fighting for their survival against large numbers of Lizardian Forces. During this time, a large antimatter missile was present in the proximity of Copper 9. The planet was eventually destroyed, purportedly by The Lizards, either by the Antimatter missile or via the same thing that caused the later partial destruction of Mimmio.
Trivia
Copper 9 appears to have a planet that orbits alongside it, and this planet features a massive ring system. This indicates that it could be part of a Binary system.
Copper 9 appears to have a moon similar in appearance to both the ringed planet and our Earth's own moon.
It is possible that the planet was home to many different races of humans and not designated to one particular race. We can see this as one of the Worker Drone user manuals was printed in English, Russian, and French.
Doll and her parents both seem to have some sort of Russian-based heritage in terms of names and clothing.
Its unknown if Copper 9 was already habitable prior to Humanity's arrival or was terraformed. Its also unknown how far away from Sol it is.
