A long-time assistant manager at Hanil Bank. Diligent and sincere at work, he is a weary patriarch who suffers from his wife's nagging at home due to his thin paycheck. Though it has been a long time since he moved to Seoul, his Jeolla Province accent remains thick. Kind-hearted and soft-spoken, he cannot pass by an elderly woman selling vegetables on the street. Despite losing his entire fortune to a debt guarantee and living in a semi-basement room at Sung-kyun's house, he returns home on payday with his hands full of everything from encyclopedia sets to prenatal care tapes.

A housewife. A Gyeongsang Province lady whose generosity is almost too much. Even with their meager living, once she starts cooking, a feast breaks out in the alley. Supporting the family is a mother's lot; she starts her day at dawn packing lunch boxes for her husband and children. She is constantly busy separating her two daughters who fight every day, and the house is never quiet with the sound of people calling for 'Mom.' With tuition, field trip fees, and defense funds, there are so many places for money to go, and she resents her husband for being busy helping others while ignoring their own family's plight.

A 2nd-year student at Ssangmun Girls' High School. The sorrowful second daughter of the Dong-il family, squeezed between her older sister and younger brother. Her nickname is 'Teuk-gong-dae,' short for 'a head that is especially bad at studying.' Despite having grades close to last place—ranked 999th—she is a cool girl who doesn't care much about her academic performance.

A 2nd-year student in the Mathematics Education Department at Seoul National University. The eldest daughter of the Dong-il family. She is the pride of the family and, at the same time, a troublemaker. She has a personality where she must do what she wants to do, and she is a hothead who sees fire when she gets angry.

A 1st-year student at Ssangmun High School. The precious youngest son of the Dong-il family. He has a face that looks incredibly old for his age; even when standing with adults, he looks like he's in his 40s. Between his strong-willed sisters, he is just a 'scaredy-cat.' On days when his sisters fight, he is busy walking on eggshells around both of them. Still, he is the only son who always receives special treatment from Dong-il. He wears a Pro-World Cup tracksuit 365 days a year. Though he is going through a turbulent puberty, he is kind-hearted and never causes trouble for those around him.

A 2nd-year student at Ssangmun High School. The second son of the Sung-kyun family, who is dissatisfied and prickly about everything in the world. An immature soccer fanatic who lives and dies for the sport, he is known in the alley simply as a dog—often called 'Gae-Jung-pal.'

A 2nd-year student at Ssangmun High School. Sun-young's eldest son. The student council president of Ssangmun High and the dream son of every mother in the Ssangmun-dong alley. A gentleman who is popular with both friends and teachers.

A genius Baduk player. The only son of the owner of 'Bonghwangdang,' the local jewelry shop.

A 2nd-year student at Ssangmun High School. The youngest in a family of five sons. The Park Nam-jung of Ssangmun-dong who conquered the school with his dancing. He is called 'Dorongnyong' (Salamander) in the alley.

Sun-young's late-born youngest daughter. She receives all the love and cuteness from the people in the alley.