Batako-san assists Uncle Jam in his bakery. Her primary duty involves crafting and mending the capes that grant Anpanman and other heroes the power of flight. She is dedicated and hardworking, though sometimes forgetful in her tasks. Her Japanese name, meaning "Butter Girl," connects directly to her bakery setting. She appears in numerous Anpanman films and episodes, such as "Dokin-chan no Dokidoki Calendar," consistently fulfilling her role without notable change.