Moon

The Moon is one of Earth's natural satellites.

Overview
The Moon is an astronomical body that orbits the Earth. 1 gram of moon rock is worth about 600,000 yen.

Appearance
It originally resembled the moon in real life. During his fight with Boros, Saitama altered the moon's appearance by jumping back to Earth from it, leaving a huge crater on the natural satellite.

Nearly the end of the Monster Association incident, it is revealed that there is another crater on the back of the moon, the other side from where Saitama had made his jump. The crater is much deeper and appears as if it has been dug and not natural at all, with what seems to be a strange spine-like stone peeking out from the center of that hole.

Alien Conquerors Arc
After activating his Meteoric Burst, Boros kicks Saitama to the Moon. Saitama picks himself up and after a moment's consideration jumps back to Earth, leaving an immense crater on the Moon from the force of his jump.

Monster Association Arc
"God" appears standing on the moon right before taking Homeless Emperor's powers and killing him.

During the fight between Saitama and Monster Garou, Blast teleports them to a space between the Moon and the Earth. On the dark side of the moon, it mysteriously shows a massive crater of sorts with what appears to be a spine embedded within it.

Volume 7 Bonus
Saitama finds a small piece of rock from the moon in his boot. Discovering its high value, he goes to sell it off only to drop it in the gravel of a parking lot. Saitama and Genos then spend the night trying to find the lost moon rock.

Trivia

 * It is implied that there is a connection between "God" and the moon. There are multiple showings with the moon appearing during the big fight between the Hero Association and Monster Association, as if it is an eye watching the battlefield. This is indicated when "God" has emerged and stood on top of the moon before taking Homeless Emperor's powers and his life. Later, during the fight between Saitama and Monster Garou, a spine of sorts is revealed on the dark side of the moon.

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