Pluto is the farthest planet away from the Sun in the Solar System.
Sailor Moon series
In the Sailor Moon series, Pluto was the home planet of and the planet that was protected by Sailor Pluto.
In the manga, Charon Castle was known to orbit the planet, and it was the castle of Princess Pluto
- While Pluto is still classified as the Solar System's ninth planet in Sailor Moon, the actual Pluto has been demoted to a "dwarf planet" in 2006.
- The name, Pluto, originates from the Roman god of the underworld, the dead, and riches.