Maria is Rosa's daughter, and is the youngest of the cousins. She has a habit of uttering 'uu-uu' at times, which frustrates Rosa greatly. Maria is also rather stubborn, and believes things easily, which isn't uncommon for someone her age. She has an interest in the occult, like her grandfather. She carries around a bag which is filled with occult items, such as a scorpion charm which wards off evil. She idolizes witches, and believes that they are there to bring people joy and happiness. In Maria's notebooks there are sketches of witches, and the witches are beautiful, fantastical creatures. It upsets Maria greatly when someone denies the existence of witches, especially Beatrice's existence. At certain times, Maria undergoes a personality change, and begins to laugh in an unnerving fashion. When she is in this mode, she acts rather condescendingly with regards to things about the occult, and will often call people like Battler 'stupid' for having little to no knowledge of such things. She is the subject of bullying in her class, and the boys in her class often took her books and rubbed them off each other, saying that they got her 'germs'. However, Maria is content with being bullied. Maria came up with quite an imaginative story, where a horrid witch is terrorizing the school, causing students to get into accidents and the like. However, an angel offers one student as a sacrifice so that all the other students shall be safe. With that story, Maria doesn't mind being the subject of bullying, as she feels like everyone else can remain safe while she shoulders the burden. Although she has no real friends, with Maria's vivid imagination, she breathes life into her stuffed animals. Namely, Sakutaro. Sakutaro was originally a stuffed lion cub, created by Rosa as a birthday present to give to Maria. Maria cherished it, and even though she was often alone, with Sakutaro she didn't feel as alone. However, Sakutaro met a tragic end when Rosa ripped him apart. Maria is a rather innocent child, and fully believes that her mother needs to work such long hours and weekends. Rosa often forgets Maria's promises, but Maria says that her mother's work is more important. Rosa has told Maria never to call her work office unless it's an emergency. But, once when Maria called, the office told her that her mother wasn't at work.