Cybertron is a massive robotic living world, the home planet of the Cybertronians, and formerly used as a factory world by the corrupt Quintessons. It is ostensibly the body of the Cybertronian creator god, and Lord of the Light Gods, Primus.
As a rogue planet, Cybertron doesn't orbit a sun. Its present location is in the outer Sol System, having been formerly located in the Alpha Centauri System. It is orbited by three moons: Moonbase 1, Moonbase 2 and Unicron. It's regarded as a terrestrial planet, with an atmosphere breathable for natives, and its primary terrains include metallic wastelands, deep canyons, acid swamps, spires, subterranean caves and subterranean cities.
Points of Interest
Notable locations include Iacon, Kaon, Polyhex, Cybertronopolis, Darkmount, the Sonic canyons, the Acid Swamps, the Cybertron Speedway, the Caves, the Plasma Energy Chamber, Tyger Pax.
Primus
At the beginning of time, The One Above All created Primus and Unicron to explore the multiverse, Unicron however, wished to consume all of existence, so to prevent this, Primus trapped Unicron into many worlds across many universes, and he himself created infinite shells for himself across all universes, and these shells were known as Cybertron, now the system hasn't always been perfect, what with Unicron usually terraforming his prison into a metallic body, and of course there was the Unicron War, the Unicron Singularity, and so on and so forth, but eventually, this was changed, when Nexus Prime, using the power of the Star Saber, thickened the walls between realities, and made every single Primus (and by extention, Unicron) their own individual being.
Notes
- Despite most universes in the Transformers Multiverse having some kind of equivalent of Primus, the Malgus Cluster is completely free of Primus and Unicron.