Pluto is a small, icy world first discovered in 1939, and recognized as the ninth planet in the Solar System until quite recently. Its orbit was tilted instead of level like the other planets orbiting the Sun. It is now considered a dwarf planet and many astronomers speculate and believe it is not part of the solar system. To this day, there has been many conflicts whether it was a planet or not.
In X = Ben + 2 Pluto was destroyed by Milleous Conquest Ray as an example of what might happen to New Earth if Attea isn't returned in time. However, before the Conquest Ray can fired, Goku backfires the ray, causing it to malfunction and destroyed Fake Namek instead of New Earth. Pluto was later restored by Shenron.
- Matt Wayne hinted that Pluto probably will appear again in some point of the series.
- Albedo showed distain of Pluto, also considering it to be a dwarf planet.
- Serena said she wants it to be a planet instead of a dwarf planet.
- In Cosmic Destruction, Pluto was one of the many planets Evil Way Big had destroyed. It was later restored by Porunga.