Lieselotte Achenbach (リーゼロッテ・アッヒェンバッハ Rīzerotte Ahhyenbahha?) is known internationally as the “Crimson-Eyed Criminal.” After losing her family, Lieselotte was emotionally scarred, and she became a cold-hearted assassin. Somehow, Lieselotte carries around the consciousness of her older sister, Elfriede. Lieselotte’s sister has the power to manipulate puppets, and together, they are a force to be reckoned with.
Lieselotte does not know how she got into her current situation. She can remember living peacefully with her family. She can remember the smell of her mother’s warm baked goods. She can remember playing with her older sister, Elfriede. However, something horrible happened to all of them. Now, she travels the world alone, accompanied only by a ball-jointed puppet with no legs. Lieselotte has hopes that one day she and her family can all live together again and be happy. One day, Lieselotte was hired by a mysterious woman who asked her to capture Heart Aino and then disappeared. Lieselotte then heads to Japan to capture Heart Aino. Upon successfully capturing Heart, Lieselotte began regret within her self after fighting Heart (due to her caring but yet cheerful personality) where she began to distrust her contractor and after heading to skies secretly Lieselotte broke her contract and let Heart free where at the end Heart headed for Mildred where after the defeat of her, Lieselotte decides to keep an eye out for Heart for unknown reasons.
Lieselotte has a German accent. Heart calls Lieselotte "kidnapper" due to her storyline.