Moon kun

Moon kun is the anime boy version of Earth's moon.

In the book Earth-chan and Friends by Tamuna Tsertsvadze, Moon-kun is the major character with multiple personalities that change according to his different phases. He first appears in Chapter 6. He is the first planetary person to establish contact with humans - the parasites in Earth-chan's hair. Consequently, he is the major figure to help Earth-chan recover from her illness.