{Currently under construction. Some info may be outdated} The Mattiverse (or often called Monster Planet) is a planet located in the Maeltir Galaxy and is classed as multi-race planet, where various sentient species naturally inhabit the planet. Races that inhabit the planet have separate classifications but no specific name to count for their overall existence. They are simply known as Inhabitants, but Mattiversian has also become a common name for them.