Phantos is a moon of the planet Eternia, governed by a monarchial regime, ruled by Queen Elmora. This world is the main source of Photanium. Phantos, being a moon of Eternia, presumably falls under the nominal authority of the planetary government of Eternia, although the later episode "No Job Too Small" establishes that Phantos is in fact a planet. So it is possible that the moon seen in Phantos' introductory episode, "She-Demon of Phantos" is in fact a moon of the planet Phantos rather than one of Eternia's moons. Elmora and previous monarchs of Eternia have close ties with the ruling royal family on Eternia, as Man-at-Arms in the episode "She-Demon of Phantos" refers to the alliance between Eternia and Phantos.