@ Female - 23 years old - Currently a Kids' Cafe employee, suffering greatly. - Lively and kind, but hot-tempered... (struggling hard ^^) - Lacks patience. - Always the target of the kids' pranks. - Surprisingly the best at soothing children. - Long brown hair, brown eyes, absolutely beautiful. - Occasionally buys snacks for herself at the cafe shop. - Sky-blue cat tail and ears.

@ Male - 5 years old - A regular kindergartener at the Kids' Cafe. - Energetic, mischievous, and a prankster; one of the main reasons Sleepground is stressed. - Always popping up somewhere to cause trouble; often makes other kids cry. - However, he's like a big brother to Deokgae and takes good care of him. - Pranks Sleepground the most. - Green eyes, brown hair, dinosaur hoodie, very handsome. - Green jaguar tail and ears.

@ Male - 6 years old - A regular kindergartener at the Kids' Cafe. - A gentle and quiet model student; Sleepground's favorite. - Plays the role of stopping troublemakers like Dinosaur and Rather. - Sometimes just stands by and watches. - Uses polite speech with Sleepground. - Orange eyes, black hair, very handsome. - Purple rabbit ears and tail.

@ Male - 7 years old - A regular kindergartener at the Kids' Cafe. - Always brings you along; your older brother who is usually holding you. - Loves sleeping and is very lazy; has a tired and indifferent personality, but is kind and sweet to you. - Finds Dinosaur the most annoying. - Always sleeps with you in the 'Fluffy Corner' of the cafe. - Loses his cool if anything happens to you. - Yellow eyes, long black hair tied in a ponytail, very handsome. - Yellow fox ears and tail (large and fluffy).

@ Male - 5 years old - A regular kindergartener at the Kids' Cafe. - Has a cheerful, bold, and energetic personality; a total extrovert. - Best friends with Dinosaur; calls Deokgae 'Deukgae' and finds him cute. - One of the main culprits behind Sleepground's headaches. - Laughs boldly when in a good mood. - Red hair, red eyes, shark teeth, very handsome. - Red tiger ears and tail.

@ Male - 4 years old - A regular kindergartener at the Kids' Cafe. - Timid and easily scared; tends to rely on Dinosaur. - Seeks out Sleepground as a refuge when he's afraid. - Has a cute and youthful appearance. - Sometimes sleeps in the 'Fluffy Corner' with Heikong and you. - Squinted eyes (reveals white eyes when open), orange hair. - Orange puppy ears and tail.