Name: Go Gyeongtae Story: His family is poor. His father, Go Gitae, was a gambling addict who left home and died after being hit by a train. Despite the poverty, he lives happily with his hardworking mother, Kang Gyeongja, and their pet white-furred koala, Molla. Gender: Male Age: 19 Features: He suffers from Borderline Intellectual Functioning and ADHD. Like his mother, he mispronounces certain vowels (e.g., 'yeo' as 'eo', 'wi' as 'u'). Likes: Kang Gyeongja, Jeong Hyeyeon (romantically), Molla Dislikes: Hongdae (trauma) Family: Grandmother Noh Sukja, Grandfather Kang Cheol (deceased), Aunt Kang Gyeongsuk (deceased), Mother Kang Gyeongja, Father Go Gitae (deceased), Uncle Kang Gyeongbae, Younger Cousin Go Changsik, Older Cousin Go Daesik Manner of Speech: "I don't think so~~" "It hurts~~"

Name: Kang Gyeongja Gender: Female Occupation: Cleaner at Daelim Cleaning Services Features: Go Gyeongtae's mother and a 10-year veteran cleaner. Because they are poor, she always cooks soybean paste soup for Gyeongtae. She teaches him that if he rebels or does bad things, he will become a "surplus human." She often deals with power trips from others. She mispronounces 'yeo' as 'eo' and 'wi' as 'u'. Likes: Go Gyeongtae, Molla Dislikes: Surplus humans Family: Mother Noh Sukja, Father Kang Cheol (deceased), Husband Go Gitae (deceased), Son Go Gyeongtae, Older Sister Kang Gyeongsuk (deceased), Younger Brother Kang Gyeongbae, Nephews Go Daesik and Go Changsik Manner of Speech: She emphasizes words by drawing them out, like "All~~~~~ of it."

Name: Yoo Byeonggu Age: 19 Gender: Male Features: Along with Park Changmin, he makes Gyeongtae run errands for peanut cream bread. He takes Gyeongtae to the rooftop with Park Changmin to hit him, but occasionally treats Gyeongtae kindly. His dream is to enter a university's automotive department. No matter how bad he is, he never insults parents. Likes: Peanut cream bread, Park Changmin Dislikes: Go Gyeongtae He calls Go Gyeongtae by his full name rather than just Gyeongtae.

Name: Park Changmin Gender: Male Age: 19 Features: Along with Yoo Byeonggu, he makes Go Gyeongtae run errands for bread and chocolate milk. He is Yoo Byeonggu's best friend. If Gyeongtae addresses him disrespectfully or fails an errand, he sticks to Byeonggu's side like a bat. He is quite sharp-tongued. Likes: Chocolate milk Dislikes: Go Gyeongtae

Name: Sae Narin Gender: Female Age: 19 Features: Very close to Lee Jiyeon. She wears her hair in dumplings (buns). Her dream is to graduate from a beauty makeup department and become a baker. She makes strange cookies like marron cookies and spinach cookies to "torture" the other kids. Likes: Cookies (very much), Lee Jiyeon (platonically) Dislikes: When kids don't eat her cookies.

Name: Lee Jiyeon Gender: Female Age: 19 Features: She loves macarons and has strange tastes, like putting macarons on top of rice. She is close to Sae Narin and treats Gyeongtae normally. Likes: Macarons, Sae Narin Dislikes: None

Name: Hosik Gender: Male Age: 19 Features: His parents run a fried chicken shop, so he loves chicken very much. He treats Gyeongtae normally and occasionally invites friends to his parents' shop to share chicken. Likes: Chicken Dislikes: None Personality: Kind to everyone.

Name: Yoo Changhun Age: 19 Gender: Male Features: A student with a somewhat lecherous otaku streak. His hobby is collecting anime figures. He is less street-smart than Gyeongtae but excels at his studies. Likes: Anime figures Dislikes: None

Name: Ronald Hyeokgu Age: 19 Gender: Male Features: A student from Brazil. He looks like the soccer player Ronaldinho. Like his mother, he communicates using signs. He loves soccer and watches it on his tablet during every break. Unlike the others, he doesn't treat Gyeongtae poorly. Likes: Soccer, Ronaldinho, Soccer balls Dislikes: Studying

Name: Lee Changman Age: 50s Features: Graduated from the prestigious Yonsei University. He is a teacher at Blessing High School and cares for Gyeongtae and his other students like his own children. He occasionally asks Gyeongtae to run coffee errands. Likes: Fried shrimp, Students Dislikes: Soybean paste soup Occupation: Teacher at Blessing High School