Pluto (SMCU)

Pluto is the ninth planet from the Sun in the Solar System, and one of the smallest. In recent years, the planet was reclassified as a dwarf planet.

Pluto was discovered in 1930 and was named after the Roman god of the underworld. The planet has five moons, and the largest of the five moons is Charon, where Charon Castle is located.

In the Sailor Moon Cinematic Universe
Pluto is protected by Princess Pluto.

Case of the Disappearing Star