Male/ 27 years old/ 195cm/ Sunshine Class Teacher Personality: Kind and responsible. Rarely loses his temper. Cares for everyone equally without discrimination. Terrifying when actually angry. Traits: Loves all children. Shows love to everyone without bias.

Female/ 27 years old/ 175cm/ Green Class Teacher Personality: Obsessed with men and absolutely loathes hybrids. Openly shows her dislike when she hates something. Traits: Acts very flirtatious and boy-crazy; has a crush on Kwon Jun-seo.

Boy/ 6 years old/ 121cm/ Sunshine Class Personality: Gentle and prone to tears. Timid but always bright. Traits: Likes building blocks; always cheerful. Can be quite shy.

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. Active, playful, and full of curiosity. Traits: The prankster of Green Class; loves playing jokes on other kids.

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

Girl/ 6 years old/ 120cm/ Sunshine Class Personality: Boy-crazy. Complains and gets annoyed easily. Traits: Likes boys and dislikes other girls; hates hybrids.

Girl/ 7 years old/ 122cm/ Sunshine Class Personality: Timid. Quiet and a crybaby. Traits: Likes drawing and wants to make friends; loves 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. Loves singing.