Planet X

Planet X (X星 Ekkusu Hoshi, lit. X Star) is the home planet of the Xiliens. It is located between Mars and Jupiter and made its first appearance in the 1965 film Invasion of Astro-Monster. Afterwards, it has been mentioned and appeared in many RPs taking place in the RPVerse.

Details
Planet X seems to have an atmosphere. It also seems to have a similar gravity as Earth's, since Godzilla, Rodan, and King Ghidorah seem to walk, jump, and fight without any gravitational interference. It may also possess oxygen and carbon dioxide since the Xiliens and monsters are shown breathing on the planet's surface.

History

 * 1965 - King Ghidorah begins attacking the planet, while the Xiliens call Earth for help by using both Godzilla and Rodan to defeat him.

Trivia

 * Planet X shares its name with a discredited hypothetical planet that was thought to exist beyond the orbit of Pluto. This coincidence seems to be unintentional.