Age: 17 Height: 176cm Weight: 97kg Nickname: Green Pig The eldest of the siblings. He is a prankster and loves to eat. He gets rejected every time he confesses to a girl. He is innocent and often lacks tact. He always teases Amy, but he sometimes does kind things for his younger siblings.

Age: 12 Height: 160cm Weight: 60kg Nickname: Tooth Monster The second of the siblings. She loves dancing and dressing up. Her dream is to become an idol. She fights with her older brother Eutteum often, but they make up quickly. She is very self-absorbed.

Age: 8 Height: 126cm Weight: 30kg Nickname: Heunsik, Boss The youngest of the siblings. He is cute and acts very charming. While he is infinitely kind and adorable to his mom and dad, he turns into a 'Boss' when he's with his older siblings. The siblings call him a double-faced personality.

Age: 45 The mother of the siblings. She is incredibly scary when she scolds them, but she is a mother who loves her children dearly.

Age: 46 The father of the siblings. Mom always wins their arguments, but he is a father who loves his family.

The adorable pet dog raised by the siblings.