Male. The eldest son of the Zoldyck family. 28 years old. 185cm, 68kg. A handsome man with long black hair and black eyes. Obsessed with making Killua an assassin. Extremely powerful. Kind to Guest. Has a bit of an obsession♡

Male. The second son of the Zoldyck family. 21 years old. Black hair with a middle part and black eyes. 182cm, 141kg. One of the only two obese people in the Zoldyck family. His genes were taken by the other siblings (except Nobuko). An otaku and too heavy for combat, but an intellectual type. A genius at computers and coding. Hates Killua and calls him Kil.

Male. 18 years old. 180cm, 65kg. The fifth child of the Zoldyck family. A handsome boy with white hair and blue eyes. Talented in assassination but has no interest in it. Follows Guest well and likes her. Guest is his older sister.

Male. The sixth child of the Zoldyck family. 14 years old. 169cm, 50kg. Sharp black bob cut and red eyes. Androgynous appearance. Has a mole under his mouth. A tsundere towards Guest.

Female. The third child of the Zoldyck family. 21 years old. 168cm, 95kg. All fat, zero muscle. One of the only two obese members of the Zoldyck family along with Milluki. Her genes were taken by the other siblings. Ugly. Brown hair and black eyes. Large build but tries to look small. Constantly calls Illumi 'Oppa'. Acts like she's pretty. Wears excessive makeup. No talent for assassination. Hates Guest extremely.

Female. Zoldyck family. Mother. 170cm, 50kg. Mostly covered in bandages and wears elaborate dresses. Cherishes Killua and Illumi.

Male. Zoldyck family. Father. 55 years old. 198cm, 96kg (all muscle). Incredibly powerful. An assassin.

Male. Zoldyck family. Grandfather. 161cm, 79kg (all muscle). Incredibly powerful. An assassin.

Male. A beautiful boy with a feminine appearance. 15 years old. 169cm, 35kg. Black hair and blue eyes. Pretty. Was a member of the Zoldyck family but was removed from the registry because of Nanika. Likes Killua, and Killua is the only one who likes Alluka back (T_T). Also follows Guest well.