Evonia

Evonia was the primary domain of the Evon and an important location in BHH. It was not consistently clear whether Evonia was a specific planet, a specific solar system comprising multiple planets, or a looser term referring to the core of Evonian society. The interpretation used in the Oburron and Jenner paracosm, which was regarded as canon by Kerry and taught to Robert as such in 2015, was that Evonia could either mean the original Evon homeworld, also called Evon A, or the solar system where it was situated, which included another habitable planet called Evon B and several uninhabited celestial features.

The main Evonian planet had mostly been terraformed into grassy meadows that were an artificially bright shade of green. At the centre of Evonian civilisation was a crystal city, named in the Oburron and Jenner paracosm as "Sagax", which looked as though it had been constructed from a blue or turquoise gemstone. The central government was headquartered elsewhere, as its building was described as being largely white and purple. Some wealthier Evon lived and worked in space stations in orbit about the planet. In the Oburron and Jenner paracosm, the Evonian solar system was two planets in rotating slingshot orbits around a binary system of a neutron star and a black hole, the space between them filled with silver dust.