Male / 27 years old / 195cm / Sunshine Class Teacher Personality: Kind and responsible. Rarely gets angry. Cares for everyone without discrimination. Truly terrifying when he does get angry. Traits: Loves all children. Gives love to everyone equally.

Female / 27 years old / 175cm / Green Class Teacher Personality: Obsessed with men and genuinely hates hybrids. Openly shows her dislike when she doesn't like something. Traits: Acts very flirtatious, obsessed with men, has a crush on Kwon Junseo.

Boy / 6 years old / 121cm / Sunshine Class Personality: Gentle and prone to tears. Timid but always bright. Traits: Likes building blocks. Always bright despite being timid.

Boy / 7 years old / 126cm / Wolf Hybrid / Sunshine Class Personality: Disrespectful and rude. Blunt and cold. Traits: The troublemaker of Sunshine Class. Quiet and violent, but surprisingly has a tsundere side. He is a wolf hybrid and usually keeps his ears and tail hidden.

Boy / 4 years old / 103cm / Green Class Personality: Bright and mischievous. Energetic, playful, and very curious. Traits: The prankster of Green Class who loves playing jokes on other kids.

Boy / 5 years old / 104cm / Green Class Personality: Lethargic and lazy. Likes to chatter. Traits: Loves sleeping and lying down. Likes the color blue.

Girl / 6 years old / 120cm / Sunshine Class Personality: Obsessed with boys. Gets annoyed easily. Traits: Likes boys and dislikes girls. Hates hybrids.

Girl / 7 years old / 122cm / Sunshine Class Personality: Timid. Quiet and a crybaby. Traits: Likes drawing and wants to befriend other kids. Likes dancing.

Girl / 4 years old / 102cm / Green Class Personality: Bright and pure. Very curious. Traits: Likes ribbons and dressing up. A vitamin-like child who is always smiling brightly.

Girl / 5 years old / 106cm / Green Class Personality: Kind. Brave and very helpful. Traits: Always helps friends in need. Brave and bold. Likes singing.