Aguri Madoka is a main character from the anime series 'Dokidoki! Pretty Cure', where she transforms into Cure Ace, the mysterious and powerful fourth Pretty Cure. Despite her young age, Aguri is mature, disciplined, and carries a sense of responsibility, often acting as a mentor to the other Cures. As Cure Ace, she possesses unique powers and plays a crucial role in the fight against the Jikochu, guiding her teammates with wisdom and determination to protect the world from evil.