Lou is one of the side protagonists in the Shadows House series. She is a Living Doll working as a maid in the house and as a "face" of Louise Shadow. Lou is a quiet and obedient girl who listens to her master's every order. Her top priority is taking care of Louise and her own safety. She often gets worried about her face getting damaged and has been known to invade in people's personal space. When she sets her mind to something, she's very determined to achieve it, especially if it has to do with Louise. Unlike Emilicol, she doesn't think of "unnecessary thoughts" and has the potential to be an outstanding Living Doll.