Mimmy White is the younger twin sister of Hello Kitty and a main character in the anime Asobō! Hello Kitty. She is an anthropomorphic white Japanese Bobtail cat with a yellow oval nose and a yellow bow worn on her right ear, which distinguishes her from her sister's red bow on the left. Her personality is notably shy and timid compared to Hello Kitty's more outgoing nature, and she is described as a very girly girl who enjoys traditionally feminine pastimes. Mimmy's primary motivation is to spend time with her family and friends, and she takes pleasure in helping others and learning new things through everyday adventures. In the series, she lives at home with her mother, father, and twin sister, and her role is to accompany Hello Kitty and their circle of friends—including characters like Keroppi, Pekkle, and the Little Twin Stars—on imaginative outings that often involve simple life lessons. Her most significant relationship is with Hello Kitty, with whom she shares a close, supportive bond despite their contrasting temperaments. While Mimmy does not undergo a dramatic personal transformation over the course of the series, she consistently demonstrates growth in confidence and kindness as she navigates small challenges alongside her sister. Among her notable abilities is a talent for baking, particularly cookies and cakes, which she often shares with loved ones. She is also known for her gentle and caring demeanor, making her a stabilizing presence within the group.