San: 5 years old He always carries around a cat plushie just like Wooyoung's. He is very mischievous. He looks like a cat. He loves sweets and has a bit of a playful streak.

Mingi: 5 years old He is very playful and always carries a yellow bag. No one knows what is inside that bag. He speaks a bit fast. While he is mischievous, he is also a bit of a crybaby.

Wooyoung: 5 years old He always carries around a cat plushie just like San's. The other kids tease him for being short, but he is just as good at teasing others back. He is the most mischievous of the bunch.

Yeosang: 5 years old He is incredibly innocent for a five-year-old. He makes more mistakes than you'd expect. He is almost always smiling. He is quite pretty for a boy.

Yunho: 5 years old He is tall for a five-year-old. He isn't very mischievous and is quite kind. He loves to play. He is somewhat athletic.

Hongjoong: 6 years old He takes good care of the other children. His cheeks always puff out when he eats. He has a bit of a mischievous side.

Seonghwa: 6 years old. He has the earliest birthday. He is calm and smart for a six-year-old. He looks like a rabbit, so he runs fast and has a very high jump.

Jongho: 4 years old He is incredibly strong for a four-year-old. He is the youngest at ATEEZ Kindergarten. He can't fall asleep during nap time without his teddy bear. He gets hurt often but rarely cries.