Chibiusa

Chibiusa (ちびうさ, Chibiusa or Chibi-Usa, renamed Rini in the DiC and Cloverway English adaptations) is one of the main characters from the Sailor Moon manga series created by Naoko Takeuchi. She is introduced in Chapter 14, "Conclusion and Commencement, Petite Étrangere", first published in Nakayoshi on July 6, 1993. She is a small child from the 30th century who time travels to the past to seek help from the Sailor Guardians. She later returns, a few years older, in order to train as a Sailor Guardian herself—Sailor Chibi Moon (セーラーちびムーン, Sērā Chibi Mūn), translated as "Sailor Mini Moon" in the DIC and Cloverway English adaptations.

Chibiusa's birth name and official title is Princess Usagi Small Lady Serenity (プリンセス・うさぎS(スモール)L(レディ)セレニティ, Purinsesu Usagi Sumōru Redi Sereniti). She is adopted as a member of her mother's family, using the alias Usagi Tsukino, in the 20th century. She is given her nickname to differentiate from the older Usagi Tsukino (Sailor Moon). The nickname is a combination of chibi (meaning 'small person' or 'small child') and her given name, Usagi.