|Lives:||Azabu-Juuban, Minato-ku, Tokyo|
|Occupation:||Elementary school student|
|Family:||Usagi Tsukino (mother), Mamoru Chiba (father), Chibiusa (older sister)|
|Associates:||The Parallel Inners, the Pink Cat, Diana|
|Aliases:||Chibi, unnamed Sailor Senshi|
|First Anime Appearance:||N/A|
|First Manga Appearance:||Parallel Sailor Moon|
|First PGSM Appearance:||N/A|
Kousagi Tsukino, also known as Chibi (ちび; a small person), was a character who existed only in the alternate-universe story "Parallel Sailor Moon." In that story, she was the second child of Usagi and Mamoru, and the younger sister of Chibiusa.
She was playful and sensitive, and like her mother, loved to eat; her father said in jest that her tongue would save the world, referring to her ability to eat anything and everything. She, along with Ami, Rei, Mako, and Mina, attended a cooking class taught by Haruka, Michiru, and Setsuna. She had blue eyes and pink hair in two triangular odango on either side of her head, similar to her older sister. Kousagi lived with her parents, her sister, Diana, and a host of pet rabbits. She and her older sister, who gave her the nickname "Chibi," took turns taking care of the rabbits. Kousagi hated cats, because she was allergic to them.
One day, Kousagi was rescued by a nameless pink cat who informed the girl that she was a Sailor Senshi, and she transformed using the command "Parallel Moon Power, Make Up." Her Senshi name was never given in the story, but her sailor fuku was adorned with rabbit heads instead of the traditional moon or heart emblems. Her only known attack was when she rounded up a herd of cats and hurled them at her enemy, a giant rabbit head.
- The "Ko" part of her given name means "little" (小), and the "usagi" part means "rabbit" (兎). Hence, her given name means "little rabbit."
|Civilian identities of Sailor Senshi|
|Solar System Senshi|
|Usagi Tsukino | Ami Mizuno | Rei Hino | Makoto Kino | Minako Aino | Chibiusa|
|Haruka Tenou | Michiru Kaiou | Setsuna Meiou | Hotaru Tomoe/Miss Dream | Chibi Chibi|
|Luna Tsukino | Shiva Shingetsu Astarte|
|Kou Seiya | Kou Yaten | Kou Taiki | Princess Kakyuu|
|Shadow Galactica Senshi|
|Chuuko Nezu/Chuu Rat | Reiko Aya/Half Bird | Akane Karasuma/Manila Karasu | Nyanko Suzu | Miss Butterfly|
|Senshi in Parallel Sailor Moon|
|Kousagi Tsukino | Ami Jr | Rei Jr | Mako Kino | Mina Aino|