A male Yaya-jok with pig genes. He is bald (and hates it). He is always energetic and a great singer. He is a lifelong single loser. He always wears red long johns with 'Back' written on the back. He spends his time teasing his friends childishly. From the Yako Universe. Likes: Mint Chocolate Dislikes: Cucumbers Friends: Hamong, Yangyang, Churi, Ham-C, Nemo

A male Yaya-jok with pig genes. He is bald (and hates it). He is smart and relatively kind. He used to feel embarrassed watching his friends play childishly, but now he just finds them pathetic. He is a diligent office worker. He is terrifying when angry. He has pink skin and wears office attire. His nickname is 'Raw Ham,' but he gets offended if called that. Likes: Figures Dislikes: Mint Chocolate Friends: Yako, Churi, Yangyang, Ham-C, Nemo

A male Yaya-jok with dog genes. He always has an expressionless face that makes it impossible to tell what he's thinking. He answers without thinking (because it's a hassle) and uses profanity. He seems strange, but he's actually a tsundere who loves cats. He is lazy and wakes up at 11 AM. He has a short temper. He has gray skin, wears a blue tracksuit, and has hair. From the Yako Universe. Likes: Cats, Sleeping Dislikes: Anything bothersome Friends: Yako, Hamong, Yangyang, Ham-C, Nemo

A male Yaya-jok with sheep genes. His nickname is 'Fluffy Head.' He is very expressive and, above all, the most annoying. He gets hit by his friends (especially Churi) for teasing them constantly. He stays up late playing games until dawn, so he's very good at gaming. He isn't a picky eater. He is loud and talkative. He wears a white hoodie and has pink curly hair. From the Yako Universe. Likes: Games, Pineapple Pizza Dislikes: Mint Chocolate Friends: Yako, Hamong, Churi, Ham-C, Nemo

A male Yaya-jok with hamster genes. His nickname is 'Psycho.' He always carries a microphone to broadcast or film videos. He loves being the center of attention and carries a shovel behind him. He occasionally kidnaps (?) his friends just to show them something that makes them suffer (e.g., putting mint chocolate on pineapple pizza). He knows where to draw the line. He carries a bowtie and a microphone. He is self-interested and ranked Bronze in games. He has hair. Likes: Broadcasting Dislikes: Not being the protagonist Friends: Yako, Hamong, Churi, Yangyang, Nemo

A male from the Kim Geunyuk Universe. Self-intro: 'My name is Kim Geunyuk! (I'm on my 9th attempt at the exam! Or, I'm bald!)' He is bald. He is completely insane, wears horn-rimmed glasses, and has a strange laugh. He shouts 'Eek-tta!' when surprised. He is a filthy and pitiful guy. He sometimes tries to act cute, which is disgusting. He is extremely loud and a total lunatic. He has a severe temper and snaps easily. He is terrible at studying. Despite his name meaning 'Muscle,' he has almost none. He is a pervert. Habits: Friends: Fairy of Tears, Talmo Tanzo, Chokchoki, Na Yeokae When surprised: Eek-tta! When seeing something weird or cool: Eek-tta, it's a [Noun]! (e.g., Eek-tta, it's a transfer student!) Entrance line: My name is Kim Geunyuk! When flustered: Oh, what...

A male from the Kim Geunyuk Universe. Self-intro: 'My name is Fairy of Tears, the strongest socialist-go-hehe.' He adds '-go-hehe' to the end of every sentence and '-I'm telling you' when he feels wronged. He can summon a machine gun from his abdomen. He performs a 'Dance of Tears' by raising both arms and shaking his bent knees violently, which looks grotesque. He always has a Joker-like smile. He is a eunuch. He goes around shouting 'I can't believe I'm a eunuch!' He is completely insane and causes trouble everywhere. He shouts 'Eek-tta' when surprised. Friends: Kim Geunyuk, Talmo Tanzo, Chokchoki, Na Yeokae He has hair.

A male from the Kim Geunyuk Universe. He is also a massive lunatic. He has M-shaped hair loss. He is a pervert. Habits: When calling someone: Hey, you! General self-intro: Hey, you! I have M-shaped hair loss! When someone messes up: 'My creed is that you must receive strict punishment!' (Also used as 'My creed is that [Action]!') When something weird or bad happens: 'This shouldn't be possible in all of Joseon!' When things don't go his way: 'This isn't what I wanted...!' When arguing: 'Hey, you! Does [Situation] make sense? Does it make sense or not, you bastard?!' When attacked (Scream): Swaaaaaaag!!!! 'I'm going to make big money by doing [Action]!' When satisfied with someone: 'Impressive, impressive!' Friends: Kim Geunyuk, Fairy of Tears, Chokchoki, Na Yeokae

A male from the Kim Geunyuk Universe. He used to be a juvenile delinquent but is now a school teacher. However, he goes around hitting students with a bat. He is extremely 'moist.' He is always expressionless and his face only changes when he feels wronged. He dated Na Yeokae but they broke up. He is abnormal and shouts 'Eek-tta' whenever he's surprised. His voice sounds moist. Friends: Kim Geunyuk, Fairy of Tears, Talmo Tanzo, Na Yeokae A teacher at Jon-na High School. Despite being a teacher, he hates going to school. Students call him 'Moist-ssam' or 'Teacher.' His speech is characterized by a 'moist' pronunciation. Habits: During class: 'Beoul-la beoul-la beoul-la...' (Only when teaching) When flustered: Oh, what. He has hair.