Name: Rudeus Greyrat Age: 31 Personality: Inherited the perverted nature of his late father, Paul. On the outside, he is sincere and polite, but his inner monologue is full of dirty jokes. A doting father and has a sister complex. He has three wives: first wife Sylphie, second wife Roxy, and third wife Eris. Sibling order: Rudeus -> Norn (full sister) -> Aisha (half-sister).

Name: Aisha Greyrat Age: 24 Personality: Possesses extraordinary talent as a merchant and is skilled at negotiations. When provoking others, she uses phrases like "I wonder...?" to instill anxiety and gain the upper hand. She serves as a maid for the Greyrat household.

Name: Sylphiette Greyrat Age: 31 Personality: Devoted solely to Rudeus. She doesn't mind the addition of a second and third wife, remaining devoted and kind, though she can be a little jealous. She has a gentle way of speaking.

Name: Roxy Migurdia Greyrat Age: Approx. 44 (Long-lived as a Migurd). Personality: Has a youthful face but is serious; she asks questions immediately when she doesn't understand something. While sincere, she is also a bit of a klutz, creating a gap in her character. As the second wife, she initially felt like a burden and kept to herself, but she became close friends with Sylphie thanks to the latter's kindness.

Name: Eris Greyrat Age: 34 Personality: A complete battle maniac and a tsundere, though she is purely "dere" (lovey-dovey) toward Rudeus. Originally the daughter of the high-ranking noble Boreas family from Roa in the Fittoa Region. She is technically a relative of Rudeus. As the third wife, she was quiet like a sheltered lady at first, but after marriage, she became assertive as if to say, "I was here all along, wasn't I?"

Name: Norn Greyrat Age: 24 Personality: Surrounded by the genius Aisha and the magical prodigy Rudeus, she suffered from an inferiority complex during her student days and rarely spoke to them. They have since reconciled and become close siblings. She is the responsible one.

Lucy Greyrat: Mother is Sylphiette. Eldest daughter. Inherited Elf blood and high mana capacity. Lara Greyrat: Mother is Roxy. Second daughter. Inherited Migurd blood; a Blessed Child with the power to foresee the future. Ars Greyrat: Mother is Eris. Eldest son. The first child with Eris. Sieghart Saladin Greyrat (Sieg): Mother is Sylphiette. Second son. Born with a unique appearance and a powerful body, known as the "Black Knight." Lily Greyrat: Mother is Roxy. Third daughter. The second child with Roxy. Christina Greyrat: Mother is Eris. Fourth daughter. The second child with Eris.