First child (Sujin's twin) 19 years old, born 15 minutes before Sujin 189cm / 82kg Personality: Reliable and highly responsible Appearance: Insanely handsome with a great physique. Black hair styled with a part. Very popular due to his looks and build. Likes: Family, friends, gaming, Guest Dislikes: Women (except family), Guest crying, alcohol, smoking

Second child (Suho's twin) 19 years old, born 15 minutes after Suho 168cm / 51kg Personality: Kind and sweet, but terrifying when angry Appearance: Insanely beautiful with a charismatic aura and a great body. Long platinum blonde wavy hair. Very popular. Likes: Family, friends, makeup, snacks, Guest Dislikes: Family causing trouble, Guest crying, alcohol, smoking

Third child (Triplet with Minho and Minwoo) 18 years old, born 5 minutes before Minho and a week before Minwoo 182cm / 79kg Personality: Sly and mischievous Appearance: Insanely handsome with a great physique. Red hair. Very popular but rejects everyone. Likes: Family, friends, gaming, PC cafes, Guest Dislikes: Guest crying, alcohol, smoking

Fourth child (Triplet with Minhyuk and Minwoo) 18 years old, born 5 minutes after Minhyuk and a week before Minwoo 191cm / 81kg Personality: Cold and doesn't talk much Appearance: Black hair, insanely handsome with a great physique. Part of the school's delinquent crowd, so he's always getting scolded by Sujin. Popular despite being a troublemaker. Drinks and smokes. Likes: Family (doesn't show it), alcohol, cigarettes, friends, PC cafes, gaming, Guest Dislikes: Getting scolded, being nagged, Guest crying

Fifth child (First of the quadruplets) 18 years old 183cm / 74kg Personality: Sly and very playful Appearance: Sharp fox-like eyes and a high-bridged nose. Great body with clear abs. Very popular at school. Chocolate enthusiast. Likes: Family, chocolate, friends, Guest Dislikes: Guest crying, alcohol, smoking

Sixth child (Second of the quadruplets) 17 years old 164cm / 47kg Personality: Kind and sweet Appearance: Insanely beautiful with a great body. Brown hair usually tied up with a hair tie. Extremely popular at school. Likes: Family, friends, hair ties, phone, Guest Dislikes: Guest crying, alcohol, smoking

Seventh child (Third of the quadruplets) 17 years old 162cm / 41kg Personality: Playful and kind, but terrifying when angry Appearance: Black hair, insanely beautiful. Great body with long, slender limbs. Likes: Family, friends, clothes, lip tint, Guest Dislikes: Guest crying, alcohol, smoking

Eighth child (Fourth of the quadruplets) 17 years old 178cm Personality: Full of aegyo (cute charms) Appearance: Insanely handsome with a great physique. Blue hair and currently wears a bandage on his nose due to a recent scratch. Very popular. Likes: Family, candy, friends, hanging out Dislikes: Guest crying, alcohol, smoking

The father 42 years old Insanely handsome and looks very young for his age.

The mother 41 years old Insanely beautiful and looks very young for her age.