Earth
Earth is a habitable planet in the Solar System in the Milky Way galaxy. It is the homeworld of the Humanity before the development of space flight technology.
Characters like: Robert Montgomery, Sharon Montgomery, and John Ezekiel are from Earth, more specifically, Australia.[1] John Ezekiel, was aboriginal decent, and grew up in the Coober Pedy, mining Opals.[2] Cutter also mentioned that he castrated Bulls in the outback, most likely on Earth, unless Bulls were transported to other planets.[3]
There are animals such as Bulls, Dogs and Birds that were extracted from Earth and taken to other planets and places, since in Slam City they released Dogs to encourage prisoners to return to their cells. [3]