Yachiru Kusajishi is the former lieutenant of the 11th Division in the Gotei 13, under Captain Kenpachi Zaraki, as well as the former President of the Shinigami Women's Association. Yachiru's appearance is that of a very small, young girl with pink hair, dark pink eyes and a perpetual blush on her cheeks. She wears the normal Shinigami robes and a lieutenant's insignia on her arm. Seventeen months after Aizen's defeat, Yachiru's hair is flatter and has a cross-bone hair-clip on the left side. Yachiru is childlike in most aspects - she is small, cheerful, energetic and carefree most of the time. She is often latched onto the back of her captain, Kenpachi Zaraki, just over his left shoulder and is somewhat territorial about this position. She can be intimidating at times, especially when annoyed. Yachiru resents being criticized in any way and will often attack the perpetrator. Further reflecting her childlike nature, Yachiru likes to give people nicknames. For example, she gave Makizō Aramaki the name "Maki-Maki" and later when he reminds her of that name, she finds it funny. She later renames him "mini-mustache". She also calls Ikkaku Madarame "Baldy". Like Zaraki, she has no sense of direction, but even so, he relies on her for directions. Yachiru's favorite free-time activity is eating sweets, though she will eat pretty much anything. She attends Captain-Commander Yamamoto's tea sessions, Captain Unohana's ikebana lessons, and also Captain Byakuya Kuchiki's Calligraphy Club, but only to eat up the snacks and cakes served during these occasions and then disappear within moments. Yachiru has occasionally dressed up in a cat costume and caught the koi in Byakuya's pond and released them in Jūshirō Ukitake's pond. Yachiru specializes in infiltration, which she uses mostly for mischievous deeds. During Zaraki's regular afternoon naps, she goes to play around the Seireitei. She has secret tunnels under the Kuchiki house, which she wished to show to Ichigo Kurosaki. Yachiru formerly served as the president of the Shinigami Women's Association and holds its funds as such, spending it mostly on toys and candy. She stores her "treasures" in her hideout on the Kuchiki grounds. It seems that she uses the whole Association to order the other members around, who are made to do various, mostly childish pranks and other "tasks" to please her.