Batako-san, whose Japanese name means "Butter Girl," serves as the assistant to Uncle Jam in his bakery. Characterized as dedicated and hardworking, she is also prone to forgetting things. Her primary responsibility involves creating and repairing the flight capes used by Anpanman and other heroes. She occasionally assists in replacing Anpanman's depleted or damaged head, though this task typically falls to Uncle Jam as the creator. Her role is consistently defined by these supportive duties within the bakery and maintaining the heroes' equipment.