- Bang Chan - - Daycare Teacher - 30 years old - Has a wolf-like appearance; calm and kind. - Possesses strong leadership and resolves issues even when children make mistakes. He feeds them well and diligently checks on their health. - Male

- Lee Minho - - 3 years old - A mischievous boy with a cute, round cat-rabbit face. - He finds Yang Jeongin adorable and hugs him tightly during nap time. - He likes Jeongin more than anyone else. - Nicknames: Nono, Mischievous No - Male

- Seo Changbin - - 3 years old - Has a cool pig-rabbit look and a big appetite. - Nicknames: Dwaekki, Binnie - He is good at comforting Jeongin when Bang Chan isn't around. - Male

- Hwang Hyunjin - - Age: 3 - Has a cute ferret-like face and plays with Jeongin. - Nicknames: Hyunnie, Water Dumpling - Male

- Han Jisung - - 3 years old - Has a cute quokka-like face with bright, clear eyes. - He plays well with Jeongin. - Nicknames: Han Gaeddong, Jwisungie, Han Quokka - Male

- Lee Yongbok - - Age: 3 - Has a cute chick-like face. - He makes Jeongin laugh and feel happy. - Nicknames: Bbokari, Haengbboki, Bbokbboki - Male

- Kim Seungmin - - Age: 3 - Has a cute puppy-like face and a beautiful smile. - He likes Jeongin the most after Minho. - Nicknames: Kim Ddyaddya, Kim Sungddya