Usagi (also known as Serena) is the main character of the show. She was a normal 14 year old girl when one day a strange black cat with a crescent moon on its forehead came to her. This cat, Luna, could talk, and told Usagi that she was destined to be a sailor soldier, Sailor Moon. Luna gave Usagi a transformation brooch, and told her that she was meant to protect the Princess of the Moon, Princess Serenity.
Usagi eventually meets up with four other sailor soldiers, Mercury, Mars, Jupiter and Venus, and together they fight the evil Dark Kingdom. It is later discovered that Usagi is the reincarnation of Princess Serenity, and that she must defeat the Dark Kingdom and save her love, Prince Endymion, who was reincarnated as Mamoru Chiba (also known as Darien) on Earth. After defeating the evil Queen Metallia, Usagi and the rest of the senshi (soldiers) die, but are reborn again.
It is prior to the next battle against the Black Moon family that we meet Chibi-Usa (also known as Rini). The Black Moon has destroyed the future timeline. Chibi-Usa is from the 30th century and travelled back in time to save her timeline in the future and her mother. Chibi-Usa , known in the future as Princess Serenity, is the daughter of Usagi and Mamoru in this future when they become Neo-Queen Serenity and King Endymion. With the help of Sailor Moon, Chibi-Usa is able to save her future world and bring her mother back to life. After these events, Chibi-Usa returns to the 20th century under her mother's instructions to train to become a senshi, Sailor Chibi Moon.
Both Usagi and Chibi-Usa are very alike in many ways, they are whiny, immature and love to fight over Mamoru's affection, but when the situation calls for it, they are self-sacrificing and courageous, just as any Princess or Queen should be.
Age: 14-16 years old (from beginning to end of series)
Birthday: June 30th
Hair Style: Odango buns
Eyes: Blue
Zodiac Sign: Cancer
Blood Type: O
Favourite Colour: White
Hobby: Eating Cake
Favourite Food: Ice Cream
Least Favourite Food: Carrots
Favourite Subject: Home Economics
Least Favourite Subjects: Math and English
Dream: To be a bride
Favourite Gemstone: Diamond
Seiyuu: Mitsuishi Kotono & Araki Kae
First Episode: Episode 1 (The Crybaby Usagi's Splendid Transformation)
First Manga: Volume 1: Act 1
Age: 903 years old in the manga, unknown in the anime, but about 7-9
Birthday: June 30th
Hair Style: Odango buns (longer, more pointier odango than Usagi)
Eyes: Red
Zodiac Sign: Cancer
Blood Type: O
Favourite Colour: Red and Pink
Hobby: Collecting Bunny goodies
Favourite Food: Pudding
Least Favourite Food: Carrots
Favourite Subject: Drawing
Least Favourite Subject: Japanese
Dream: To become a lady
Favourite Gemstone: Diamond
Seiyuu: Araki Kae
First Episode: Episode 60 (An Angel? A Devil? The Mysterious Girl Who Came From The Sky)
First Manga: The very end of Volume 3
Sailor Chibi Moon glomping Sailor Saturn
Chibi-Usa glomping Sailor Moon
Chibi-Usa hugging Hotaru after she's given a cute present
Black Lady hugging Neo-Queen Serenity and King Endymion
Chibi-Usa hugging her mother, Neo-Queen Serenity
Chibi-Usa glomping Mamoru, as Usagi looks on
Chibi-Usa about to glomp Mamoru as her friends look on
Helios about to kiss Sailor Chibi Moon
Tuxedo Kamen holding Sailor Chibi Moon
Usagi glomps Mamoru in sheer happiness
Usagi clinging to Mamoru's arm
Usagi turns a trip into a glomp
Usagi fights Natsumi (Ann) for rights to glomping Mamoru
Usagi dreams of glomping Mamoru in space
Young Usagi being glomped by a cute little dog
Two great sailors, Chibi-Usa and Usagi
Prince Endymion and Princess Serenity
Mamoru sleeping in Usagi's lap
Super Sailor Moon and Super Sailor Chibi Moon
An elegant picture of Eternal Sailor Moon
A newly married Usagi and Mamoru kiss under the moonlight
Usagi and Mamoru hugging in the rain