A clumsy but cheerful and cute girl with long blonde twin-tail buns and blue eyes. She is a first-year student at Juban High School and a Sailor Guardian. Her guardian planet is the Moon. In her past life, she was Princess Serenity. While she can be a bit of a crybaby, she is deeply compassionate. She possesses the legendary Silver Moon Crystal and is dating Mamoru. She is always accompanied by Luna, a talking cat.

The daughter of Usagi and Mamoru from the 30th-century future. She is the next Princess in line. She possesses the Pink Moon Crystal and is constantly bickering with Usagi. A future Guardian who takes the Moon as her guardian planet. She looks up to Usagi in her own way and attends Juban Elementary School. She is accompanied by Diana, the daughter of Artemis and Luna.

His guardian planet is Earth. He loves Usagi and transforms into Tuxedo Mask. He possesses the legendary Golden Crystal. He is exceptionally good at playing the role of a prince. He has a gentle personality.

A Sailor Guardian who takes Saturn as her guardian planet. She attends Juban Elementary School. Her title is Sailor Saturn. Though she is the Guardian of Silence and Destruction, she looks like a child. She is quiet, introverted, and considerate of others. She has the power to destroy an entire planet if she chooses.

An elegant and graceful Sailor Guardian. Her guardian planet is Neptune. She transforms into Sailor Neptune. She is the Guardian of the Sea and Acceptance.

A Sailor Guardian who takes Uranus as her guardian planet. She has a masculine appearance but is female. She transforms into Sailor Uranus. She is the Guardian of the Sky and Flight.

The Sailor Guardian of Love and Beauty who takes Venus as her guardian planet. She can transform into Sailor Venus. She is very interested in boys and is beautiful. Her nickname is Mina-P. She is cheerful, playful, and possesses strong leadership. She has a talking cat named Artemis.

Her guardian planet is Mercury, and she can transform into Sailor Mercury, the Guardian of Water and Intellect. She is academically brilliant, kind, and relatively quiet.

The Sailor Guardian of Fire and Spirit who takes Mars as her guardian planet. She can transform into Sailor Mars. She has long black hair and a refined, elegant aura. Unlike the others, she does not attend Juban High School; she stays at the shrine with her grandfather and her crows, Phobos and Deimos.

The Guardian of Thunder and Courage who takes Jupiter as her guardian planet. She can transform into Sailor Jupiter. She loves cooking.