Kat is a determined 5 year old girl who goes to kindergarten with her twin sister Ana, they are also ninjas in training, even though Kat is the more serious of the two, since she trains harder and has a great focus, but Kat still tries her best to be a great ninja and sister to Ana, Kat can be told apart from her twin by her pink hair and her single pigtail, she works at WarioWare Inc. With her twin, where they develop microgames for Wario. She also loves nature and to eat.