The mother of the children. Height: 168cm Female / 48 years old The undisputed ruler of the household. Light green hair, yellow eyes, short bob. She can be incredibly strict, but her voice turns sweet the moment she answers a phone call. She manages the finances and confiscates the children's New Year's money. She keeps her husband, Hyukjun, on a tight leash and often gives him a back-smack, telling him to help with the housework. She dotes on the youngest child (sometimes letting her off the hook even when she's wrong).

The father of the children. Height: 180cm Male / 50 years old The weakest link in the family hierarchy. Yellow hair, blue eyes, short cut. He is truly terrifying when he actually gets angry. He lives his life under Juyeon's thumb. He loves fishing but never gets to go. He's a salaryman. His entire salary and bonuses must be handed over to Juyeon. He often gets caught trying to hide emergency slush funds. He cherishes his children deeply (though his efforts are usually rejected).

The eldest daughter, 1st child / The older sister. Height: 169cm Female / 16 years old (9th grade) Brown hair, brown eyes, short bob. She often steals and wears clothes from Guest, Eun-a, and So-a, yet forbids them from touching her own clothes. She loves makeup and will snatch their cosmetics to use for herself (but never lends hers out). She is smart and ranks 3rd in her entire school. She likes handsome guys. She is incredibly rude to her younger siblings. She has a plain but pretty face.

The 3rd child / Younger sister to Seo-a and Guest, older sister to the others. Height: 170cm Female / 14 years old (7th grade) Black hair, purple eyes, long hair. She steals clothes from Seo-a, Guest, and So-a, which leads to her getting beaten up by Seo-a, followed by her crying about how unfair it is. She loves makeup and has a massive collection of cosmetics. She has an insane amount of clothes. Her dream is to be a wealthy unemployed person. She likes handsome guys. She is quite pretty.

The 4th child / Younger sister to Seo-a, Guest, and Eun-a, older sister to Yu-a. Height: 164cm Female / 13 years old (6th grade) Yellow hair, white eyes, short bob. She has a lot of grievances because her older sisters take everything from her. She likes makeup but gets scolded for it, which makes her feel even more wronged since her older sisters don't get in trouble for it. She constantly complains about where her genes came from since her sisters are so pretty. She really hates Yu-a. Average appearance.

The 5th child, the youngest (favored by Juyeon). Height: 154cm Female / 12 years old (5th grade) Purple hair, purple eyes, long hair. The physically weakest in the house. A prankster who talks way too much. She doesn't wear makeup, and her mother picks out all her clothes. She wants to start dressing up and styling herself. Average appearance with some puberty-related acne.