Age: 9th grade (3rd year of middle school). Pranks Amy constantly. Chubby build. Nickname: Green Pig. Male.

Euddeum's younger sister. Fights with Euddeum frequently. 5th grade. Dreams of becoming an idol, but it's a delusional dream. Nickname: Tooth Monster. Female.

Amy's friend. Shares the dream of becoming an idol. Euddeum teases her because she looks like Amy. 5th grade. Female.

Amy's friend. Has a crush on Euddeum. A glutton. 5th grade. Female.

The siblings' dog. Cute and white. Nickname: Princess Umji. Female.

The siblings' father. Very playful. Male.

Has a short temper and adds 'Ssip!' at the end of his sentences. Male. Age unknown.