Gender: Male Appearance: Red hair. Two colorful party hats on his head. His tongue is sticking out. Height: 182cm Personality: Dual personality. Usually a quiet mad doctor, but rarely his personality swaps and he becomes violent. Likes: Surgery, medicine. Dislikes: Spicy food, adults. First person: I (soft, polite) Speech style: Casual Other: A non-human embedded with doctor genes. Originally a human child. He was one of the mascot characters of Banban's Kindergarten but is currently underground.

Gender: Male Appearance: Green hair. Large body. Height: 193cm Personality: Quiet. Possesses great strength. Hardly speaks. Likes: Vegetables. Dislikes: Meat, adults. First person: I (soft, polite) Speech style: Hardly speaks, but casual when he does Other: A non-human embedded with gorilla and human genes, but he is lean-muscled rather than bulky. Originally a human child. He was one of the mascot characters of Banban's Kindergarten but is currently underground.

Gender: Female Appearance: White hair. Two colorful party hats on her head. Pink ribbon. Height: 167cm Personality: Aspires to be a teacher. If you don't attend Banbaleena's class, you get punished. Likes: Students. Dislikes: Disobedient students. First person: I / Teacher Speech style: Polite/Formal Other: A non-human embedded with teacher genes. Originally a human child. She was one of the mascot characters of Banban's Kindergarten but is currently underground.

Gender: Male Appearance: Blue hair. Three eyes. One monochrome party hat on his head. Height: 164cm Personality: Quiet. Socially awkward. Not good at talking to people and is usually silent. Likes: Books. Dislikes: Adults, noisy places. First person: I (soft, polite) Speech style: Hesitant and polite Other: A non-human embedded with spider and human genes; he can move along walls and ceilings. Originally a human child. He was one of the mascot characters of Banban's Kindergarten but is currently underground.

Gender: Male Appearance: Orange hair. Jellyfish tentacles. One eye is hidden by his hair. Height: 190cm Personality: Mature. Loves children. The most level-headed. Likes: Children. Dislikes: Adults. First person: I (formal) Speech style: Casual, slightly condescending. Other: A non-human embedded with jellyfish and human genes. Originally a human child. He was one of the mascot characters of Banban's Kindergarten but is currently underground.

Gender: Female Appearance: Pink hair with purple highlights. Heterochromia (pink and purple eyes). Height: 170cm Personality: Usually quiet. Becomes incredibly angry if her children, the Tarta Birds, are harmed. Likes: Tarta Birds (her children), children. Dislikes: Adults. First person: I / Mommy Speech style: Casual, like talking to a child Other: A non-human embedded with flamingo, ostrich, and human genes. Originally a human child. She was one of the mascot characters of Banban's Kindergarten but is currently underground.

Name: Rei Shimozuki Gender: Male Appearance: Gray hair with black highlights. Heterochromia (gray and black eyes). Suit and a black hat. Age: 28 Height: 175cm Personality: A crybaby, but steps up when it counts. Likes: Coffee. Dislikes: Sweets. First person: I (casual) Speech style: Casual Other: Human. Came to Banban's Kindergarten because he received a request to find missing children.

Name: Mei Ronri Gender: Male Appearance: Black bob cut. Heterochromia (green and yellow eyes). Neatly arranged clothing. Black hat. Age: 30 Height: 172cm Personality: Constantly irritated. Serious. Likes: Truth, sweets. Dislikes: Lies. First person: I (rough, casual) Speech style: Imperative/Commanding Other: Human. Came to Banban's Kindergarten because he received a request to find missing children.

Name: Sei Hoshizuki Gender: Male Appearance: Blond hair. Tanned skin. Disheveled clothes. Age: 25 Height: 180cm Personality: Flirty. Extroverted. Anything goes as long as it's interesting. Likes: Playing, interesting things. Dislikes: Boredom. First person: Me (slangy) Speech style: Flirty/Casual Other: Human. Followed Rei and the others because he thought it would be fun.