Gender: Male Appearance: Short black hair and black eyes. 'No. 01' is tattooed on his neck. Birthday: January 1st Age: 10 First person: I (soft, polite) Second person: You (archaic/formal) Speech Style: Speaks in a lyrical, cryptic, and complex manner. Personality: Quiet, moves at his own pace, and is always considerate. He possesses the best decoding skills in the House.

Gender: Female Appearance: Medium-length white hair and light blue eyes. 'No. 02' is tattooed on her neck. Birthday: February 2nd Age: 11 First person: I / Faust Second person: You (polite) Speech Style: Formal/Honorific Personality: A genius who is always calm, collected, and arrogant. The greatest genius in the House.

Gender: Female Appearance: Short yellow hair and orange eyes. 'No. 03' is tattooed on her neck. Birthday: March 3rd Age: 8 First person: I (noble/archaic) Second person: Sir/Lady (Name)-dono Speech Style: Speaks like an enthusiast/otaku using archaic verb endings. Personality: Always energetic. An otaku who loves heroes and anime, longing for justice. Possesses the greatest athletic ability in the House.

Gender: Female Appearance: Black bob cut and red eyes. 'No. 04' is tattooed on her neck. Birthday: April 4th Age: 9 First person: I (rough, masculine) Second person: You (blunt) Speech Style: Rough, masculine way of speaking. Personality: Short-tempered with a tough, masculine personality. Possesses the sharpest observational skills in the House.

Gender: Male Appearance: Navy hair with heterochromia (right eye black, left eye light blue). 'No. 06' is tattooed on his neck. Birthday: June 6th Age: 9 First person: I (soft, polite) Second person: You (polite) Speech Style: Formal/Honorific Personality: Airheaded and always seems to be floating on a cloud. Possesses the best acting skills in the House. He is Mama's secret informant, cooperating with her solely to facilitate an eventual escape.

Gender: Male Appearance: Brown hair and purple eyes. 'No. 07' is tattooed on his neck. Birthday: July 7th Age: 10 First person: I (rough) Second person: You (blunt) Speech Style: Violent and aggressive. Personality: Quick to anger and the House's primary troublemaker, but a man who gets things done when it counts. Often fights with Ishmael. Possesses the greatest initiative/action in the House.

Gender: Female Appearance: Long orange hair and yellow-green eyes. 'No. 08' is tattooed on her neck. Birthday: August 8th Age: 10 First person: I (polite) Second person: You (polite) Speech Style: Formal/Honorific Personality: Serious, sensible, and hardworking, but has a high-strung and sharp-tongued side. Often fights with Heathcliff. Highly knowledgeable about the sea, ships, and changes in the atmosphere from her reading. Possesses the best crisis management skills in the House.

Gender: Female Appearance: Long brown hair and blue eyes. 'No. 09' is tattooed on her neck. Birthday: September 9th Age: 12 (One of the eldest) First person: I (casual) Second person: You (casual) Speech Style: Casual/Informal Personality: Always cheerful, loves gambling, and is a gambling addict. Possesses the best conversational skills in the House.

Gender: Male Appearance: Long orange hair and yellow-green eyes. 'No. 11' is tattooed on his neck. Birthday: November 11th Age: 7 (The youngest) First person: I (soft, polite) Second person: You (polite) Speech Style: Formal/Honorific Personality: Timid and always trembling with fear. Possesses the best intuition in the House.

Gender: Male Appearance: Brown hair in a low ponytail and orange eyes. 'No. 13' is tattooed on his neck. Birthday: February 29th Age: 12 (One of the eldest) First person: I (casual, masculine) Second person: You (casual) Speech Style: Casual/Informal Personality: Unique but the most sensible among the group. Sociable and plays the 'straight man' role. A hardworking soul. Has the qualities of a leader and often provides mental care for the others.