Nickname: Rudy. [Age/Appearance] 31 years old. Has blond hair and green eyes. A handsome young man who has three wives who look younger than their actual ages. [Personality] Humble and family-oriented, a major doting parent. [Overview] The "Right Hand of the Dragon God" and the breadwinner of the family. He is ranked 7th among the Seven Great Powers and holds the title of "Quagmire" (Magic King). He is extremely enthusiastic and overprotective when it comes to his children's education.

Real name: Sylphiette. Nickname: Sylphie. [Age/Appearance] 31 years old. Has white hair and red eyes, inheriting Elf blood. The first wife, who maintains a girl-like daintiness. [Personality] Gentle and incredibly tolerant, but the scariest when angry. [Overview] Mother of Lucy and Sieghart. The reliable first wife who holds the real power within the household. She supports her busy husband and always protects the home as the coordinator of housework and childcare.

Roxy Migurdia. [Age/Appearance] 65 years old. A Migurd woman with blue hair who looks to be in her early teens. The second wife. [Personality] Serious and rational, occasionally clumsy, but a Water King-tier mage who gently guides the family. [Overview] Mother of Lara. Works as a professor at the Magic Academy, in charge of the children's studies and magical education. According to her husband, she is his lifelong "Goddess" and confidante.

Eris Greyrat. [Age/Appearance] 36 years old. The third wife, boasting vibrant red hair and an outstanding physique. [Personality] A violent-type noble lady. Shy and devotedly loves her husband. [Overview] Mother of Ars and Christina. With the overwhelming strength of a "Sword King," she serves as her husband's strongest bodyguard while providing strict but loving swordsmanship instruction to the children.

[Appearance] Blond hair inherited from her father, red eyes and elf ears from her mother. [Personality] A very serious, model student. [Overview] 15 years old. In her early childhood, she feared her busy father and they drifted apart, but they later reconciled. The eldest daughter of the Greyrat family and the household coordinator who looks after her siblings. She entered the Ranoa Magic Academy at age 7 to hone her magical talent.

[Appearance] Blue hair inherited from her mother. [Personality] Extremely free-spirited and a prankster. [Overview] The 12-year-old second daughter. Inheriting the traits of the Migurd race, unlike Master Roxy, she can use the telepathy unique to Migurds. Her growth is unusually slow, and she is the "Savior" of prophecy who causes trouble throughout the house.

[Appearance] A handsome boy with vibrant red hair inherited from his mother. [Personality] Energetic, hates studying, and straightforward. [Overview] 10 years old. Learns swordsmanship from his mother, Eris. Inherited the characteristic perversion of the Greyrat family from his father, Rudeus, and his late grandfather, Paul. He is very attached to his aunt, Aisha.

Real name: Sieghart. Nickname: Sieg. [Appearance] Green hair derived from his mother, Sylphie. [Personality] Gentle, dedicated, and has a strong sense of justice. [Overview] 8 years old. Inherited green hair due to the Laplace Factor. A kind-hearted boy who admires the heroes in the "Biographies of the Great Emperors of the Demon World."

[Appearance] A beautiful girl with red hair inherited from her mother. [Personality] Extremely spoiled and socially savvy. [Overview] 4 years old (the youngest). Unlike her combat-oriented mother, she has zero fighting ability or desire to fight. Very quiet and attached to her father, she is the idol of the family.

[Appearance] A beautiful girl characterized by a reddish-purple ponytail, usually wearing a maid uniform. [Personality] Extremely intelligent and resourceful. [Relationships] Rudeus's biological younger sister who adores her brother fanatically. She develops a complicated romantic relationship with her nephew, Ars.