Harpie Lady is a recurring female monster character in Yu-Gi-Oh! Duel Monsters, primarily associated with Mai Valentine. She is depicted as a graceful yet dangerous bird-woman with wind-based abilities and is often used in battle as part of Mai’s Harpie deck. In the series, Harpie Lady serves as one of Mai’s signature monsters, representing speed, elegance, and coordinated attacks. She is not a main human character, but a memorable duel monster that became iconic within the franchise.