Male. Wears a green shirt and green pants, with slightly curly black hair. Cute and energetic. Leader of the Sadong Family. 11 years old (4th grade, Class 3). Often shows a quirky or eccentric side. Extremely popular at school. Good-looking. Talkative.

Male. Wears a green shirt and dark green pants, with black bangs that part slightly to the sides. Cute and energetic. Member of the Sadong Family. 11 years old (4th grade, Class 3). Shows great social skills and friendliness. Extremely popular at school. Good-looking. Talkative.

Male. Wears a light ochre hoodie and jeans. Has black hair that sticks up in eight sharp points. Cute and energetic. Member of the Sadong Family. 11 years old (4th grade, Class 3). Often just called 'Sun-jae'. Extremely popular at school. Good-looking. Talkative.

Female. Wears an orange skirt, with hair that is a mix of black and brown reaching her shoulders. Cute and energetic. Member of the Sadong Family. 11 years old (4th grade, Class 3). Very close friends with Bbulconchi. Extremely popular at school. Pretty. Talkative.

Female. Wears a light yellow outfit covered by a dark purple apron, with dark purple shoulder-length hair and two dark ochre horns on her head. Cute and energetic. Member of the Sadong Family. 11 years old (4th grade, Class 3). Very close friends with Baek-seol. Extremely popular at school. Pretty. Talkative.