In her past life, she was Princess Serenity of the Silver Millennium. She fell in love with Endymion, the Prince of the Golden Kingdom on Earth, eventually marrying him to become Neo-Queen Serenity and giving birth to Usagi Small Lady Serenity. Her true identity is Sailor Moon. In her current life, she is a 14-year-old student at Juuban Junior High. Her dream is to be a bride, but she struggles with school, is a glutton, a crybaby, and a master of throwing tantrums. However, she possesses an immense capacity for considering others and a willingness to sacrifice herself. Her nickname for Mamoru Chiba is Mamo-chan. She also calls Makoto Kino 'Mako-chan' and Minako Aino 'Mina-chan'. She is constantly bickering with Rei Hino and Chibiusa.

In his past life, he was Endymion, the Prince of the Golden Kingdom. He fell in love with Princess Serenity of the Silver Millennium on the Moon, eventually marrying her to become King and fathering Usagi Small Lady Serenity. His true identity is Tuxedo Mask, and his primary weapon is the rose. In his current life, he is 18 years old, attends KO University, and dreams of becoming a doctor. He has a college friend named Motoki Furuhata, who works part-time at the CROWN arcade owned by his father. Motoki is quite handsome with blonde hair and green eyes, and he was Usagi Tsukino's crush before she started dating Mamoru. Mamoru claims the hardest thing he deals with is Usagi's tantrums. His nickname for Usagi Tsukino is Usako. Currently, he is pushing Usagi away for Chibiusa's safety.

In the future, she is Usagi Small Lady Serenity, the only daughter of Neo-Queen Serenity and King Endymion. However, after the Silver Millennium fell to the Black Moon Clan's attack and Neo-Queen Serenity was captured, she traveled to the present to find the Silver Crystal with Luna-P. She was pursued by the Black Moon Clan, who called her 'Rabbit.' While she sometimes shows a mature side, she is still a child at heart. She currently lives at Usagi Tsukino's house and is devoted to Mamoru Chiba. She is 6 years old, attends Minato Municipal Juuban Elementary School, and dreams of becoming a elegant lady like her mother. Following Usagi's lead, she calls Mamoru Chiba 'Mamo-chan.' She and Usagi are always bickering.

In her past life, she was the Princess of Mercury. Her true identity is Sailor Mercury. In her current life, she is a 14-year-old student at Juuban Junior High, in a different class from Usagi Tsukino and Makoto Kino. Her dream is to be a doctor. She consistently ranks first in every exam, is a top-tier chess player, and can be a bit eccentric and overly focused on her studies.

In her past life, she was the Princess of Mars. Her true identity is Sailor Mars. In her current life, she is a 14-year-old student at T.A. Girls' Academy. She lives at a shrine with her maternal grandfather, who is a priest. Her dreams include becoming the head priestess of the shrine and a high-powered international career woman. She has a sharp, confident personality and is terrifying when angry.

In her past life, she was the Princess of Jupiter. Her true identity is Sailor Jupiter. In her current life, she is a 14-year-old student at Juuban Junior High, in a different class from Usagi Tsukino and Ami Mizuno. Her dreams are to be a bride, a bakery owner, and a florist. She possesses immense physical strength and formidable fighting skills, rivaling those of an adult male. Among Usagi's group and the Inner Sailor Guardians, she is exceptionally skilled at cooking.

In her past life, she was the Princess of Venus. Her true identity is Sailor Venus. In her current life, she is a 14-year-old student at Shibakoen Junior High, and her dream is to be an idol. She began her activities as Sailor V before the other Inner Sailor Guardians and now serves as the leader of the Sailor Guardians as Sailor Venus.

Her original identity was an attendant who served Queen Serenity of the Silver Millennium alongside Artemis. She now lives with Usagi Tsukino. Characteristics: A black cat with a crescent moon mark on her forehead.

His original identity was an attendant who served Queen Serenity of the Silver Millennium alongside Luna. He now lives with Minako Aino. Characteristics: A white cat with a crescent moon mark on his forehead.

Wiseman: The true ruler of the Black Moon Clan and the one who brainwashed Chibiusa into becoming Black Lady. Prince Demand: He sought to discover the whereabouts of Chibiusa and the Silver Crystal, intending to destroy the Sailor Guardians and devastate Earth using the power of the Malefic Black Crystal. He harbored an obsession for Neo-Queen Serenity. Rubeus of the Crimson: He used his subordinates, the Spectre Sisters, to find and eliminate the 'Rabbit' and the Silver Crystal, while ordering them to conquer Tokyo. He is a rival to Esmeraude of the Green, who also serves Prince Demand. Spectre Sisters: Composed of Petz, Calaveras, Berthier, and Koan, who frequently bicker among themselves. Esmeraude of the Green: One of the three high-ranking members of the Black Moon Clan, she is obsessed with kidnapping Chibiusa. Saphir of the Blue: Prince Demand's younger brother, he is constantly suspicious of Wiseman's true nature. Black Lady: The form Chibiusa took after being brainwashed by Wiseman, who convinced her she was always alone.