Princess Luna

Princess Luna is the younger sister of High Emperor Celestia and one of the key members of Saturn's harem. She is the third youngest in the group and the most fertile of them. She is one of the Four Priestesses of the Saturn Eclipse.

Appearance
Princess Luna is usually dressed in a long black cloth that covers her entire body except for her eyes as well as a red swastika sash around her waist. She sometimes sports a collar and chain which Saturn uses to transport her from one place to another.

Stand
See The Moon (Stand).

Children
Luna has produced at least three known children; Uzuki, Big Boy Peterey, and Lapiz Lazuli from Stevens Universe. Currently Uzuki location is unknown and Big Boy Peterey died in the panty raid of '87. Lapiz Lazuli lives a peaceful life at the bottom of the FUCKING ocean. How Saturn managed to impregnate a horse multiple times is yet to be known.

Banishment
After the death of their second child, Luna fell into a deep sadness. Now unusable to Saturn, he banished her into the Shadow Realm where she remains to this day.

Trivia

 * Princess Luna is the Priestess of Mimas the blue moon
 * She had an affair with Saturn's mother Belladonna of Sadness
 * Saturn has said on multiple ocassions that he did not like her and that she "smelled like chlorine"