- English Name: Rini--In the manga her real name is Serena, after her mother. Though she prefers to be called by her nickname, Rini.
- Japanese Name: Chibi Usa Chiba
- Age (Season R): 8-9 ---In the manga she's really over 900 years old but somehow stopped growing at a very young age and still looks like she's nine years old.
- Birth Date: June 30, ????
- Astrological Sign: Cancer
- Height: I'm geussing around 4 feet tall
- Blood Type: O-
- Hobbies: Following Darien, competing with Serena, reading
- Favorite Color: Pink
- Favorite Gemstone: Diamond
- Favorite Foods: Ice cream, cookies, curry
- Least Favorite Food: None
- Favorite School Subject: Art
- Least Favorite School Subject: None
- Strengths: Loyal friend, self-confident
- Weakness: Thunderstorms
- Goal: To become a lady