Mai Kujaku, known in Japanese as Kujakuu Mai, is a recurring duelist in Yu-Gi-Oh! Duel Monsters and one of Yugi's notable rivals and allies. She is a confident, stylish, and skilled card player who first appears as an antagonist before gradually becoming part of the protagonists' circle. Mai is especially known for her Harpie Lady deck and her sharp, competitive personality. Throughout the series, she serves as an important supporting character, often testing the heroes in duels while also showing a more caring side.