The Moon is a celestial object revolving around Earth in the Dragon Ball universe just like its real life counterpart. Its significance is that it has caused some Saiyans to transform into their Great Ape form and has been destroyed two times and revived one time.
Role of the Moon in Dragon Ball seriesEdit
Prior to Dragon BallEdit
21st World TournamentEdit
22nd World TournamentEdit
Man-Wolf, a fighter in the 22nd World Martial Arts Tournament, could not turn back to a human because Roshi destroyed the moon. Master Roshi used a Hypnosis Technique on Man-Wolf to convince him that Krillin's head is the moon. The Hypnosis Technique worked and Man-Wolf turned back to a human.
It was not mentioned, but the moon must have been revived during Goku's training at Kami's Lookout, as Goku in the 23rd Tournament mentions that his tail was removed so that the moon could be restored. The moon is also seen later, indicating that it has been restored.
Dragon Ball ZEdit
Gohan first transformed into a Great Ape on seeing the moon during his training with Piccolo. To prevent it, Piccolo destroyed the moon. After this, the Earth's moon was never shown again in the series.
Goku's Space pod projected the image of a moon which again made Gohan transform into a Great Ape. When Piccolo destroyed the Space pod the projector was destroyed.
Fake moon during the battle against the SaiyansEdit
This happened when Vegeta made a Power Ball that transformed him into a Great Ape. Yajirobe cut off his tail so Vegeta could not transform anymore. Later, Gohan transformed after looking at the Power Ball. Vegeta cuts Gohan's tail with a Destructo Disk after a short struggle, but Gohan landed on him and Vegeta retreated.
Wrath of the DragonEdit
The moon appears in the sky in one scene of the movie Dragon Ball Z: Wrath of the Dragon. It is possible that Dende, after becoming Guardian of Earth, restored the moon when it was clear that there would no longer be threats from evil Saiyans/Great Apes.
Dragon Ball GTEdit
During Dragon Ball GT, Goku was fighting for the humans of Earth in a death-lock battle with the Tuffle King's descendant, Baby, on New Planet Plant. Although, the moon was not present, Goku was able to transform into a Golden Great Ape due the reflection of Blutz Waves by the Earth. Although it was the Earth that caused the transformation, all of the people present for the battle questioned where the moon was, including a brainwashed Bulma and Baby himself, giving an elusion to the moon whereabouts.
Moons of other PlanetsEdit
Most moons or satellites of other planets have been shown when the planet was shown, and without much significance. However, the moons of Planet Vegeta and of Planet Kanassa were important, as Saiyans had used them to transform. The moon played a significant role during the Saiyan-Tuffle war. It allowed the Saiyans to transform into Great Apes and gave them the victory over the Tuffles after a 10 years war on planet Plant.
The sky of Arlia holds two moons. During the destruction of the planet, it shows one moon being destroyed with the planet.
Appearances in Video GamesEdit
The Tail&Moon card allows Saiyan characters such as Gohan to transform into Great Ape in the Gokuden games.
In Dragon Ball Z: Budokai Tenkaichi 3, the moon is seen in battle stages at night, allowing Saiyans with tail to transform into Great Apes. The moon can also be seen in the computer game Dragon Ball Online.
In Dragon Ball Heroes, it is possible to create a moon using special cards in order to transform into Great Apes or Golden Great Apes. The moon is shown in the sky when Gohan turns into a Great Ape in the story mode of Dragon Ball Heroes: Ultimate Mission.
- The moon is also destroyed in Akira Toriyama's previous manga series, Dr. Slump. Arale Norimaki breaks it by throwing a rock at it in chapter 23. It is shown repaired in chapter 27.