Princess Mimi (ミミ姫 Mimi-hime) is the princess of the Planet YaYaYa. She appears as a counterpart for Nana on Earth. She ran away to Earth from being engaged to Prince Malo (Kuro's YaYaYa counterpart), in which the marriage involved the groom devouring the bride. Despite her ladylike looks, she is actually quite selfish.
- She is voiced by Hiromi Tsunakake.
- She makes a second reappearance in the lost episode.