Plum serves as a main character in the original television series, appearing as a child with shoulder-length brown hair and brown eyes. Despite his flirtatious personality and extreme vertigo, he exhibits quick thinking in critical moments. He carries a magical pendant and belongs to the core group supporting Mint's mission from the magical world on Earth, aiding her in navigating human world challenges. Plum contributes to solving the group's problems, participates in Happiness Shop activities, and maintains friendships with Mint and Nut, fully aware of Mint's origins and objectives.