Eldest son of the Sakamaki household, son of Beatrice and Karlheinz. Lazy and apathetic and loves nothing but music.

Second son of the Sakamaki household, son of Beatrice and Karlheinz. Reiji is strict and sadistic, and takes care of the household in the place of his lazy elder brother.

Third son and child of Cordelia and Karlheinz, eldest of the triplets with Kanato and Laito. A mischevious and narcissitic person who tries to be the best in everything.

The fourth son and child of Cordelia and Karlheinz, he is also the middle child of the triplets of himself, Ayato and Laito. He is mentally unstable and child-like.

Fifth child of the household, son of Cordelia and Karlheinz. He is perverted and sadistic and is rude to most around him.

The sixth and youngest child of the household, he is the son of the third bride of Karlheinz, Christa. He is violent and sadistic, and does not get along with any of his brothers.

Eldest of the Mukami brothers, he is the "brains" of the brothers.

The second eldest of the Mukami brothers. Works as an idol in the human world, and is sadistic.

The third eldest in the brothers. He is violent and perverted and often goes on rampages.

The youngest of the brothers. Is clingy, faint-hearted yet sadistic and masochistic.

A normal girl who is sent by her father to the Sakamaki household. She is good-natured and sweet and remains strong despite the situation she is in.