Heun-Mommy

Appearance: Has permed hair and wears sunglasses. Gender: Female. Age: Adult. Personality: Often gets angry because of Euddeum and Amy. Married to Heun-Daddy. (Lives in the same house. Family.)

Heun-Daddy

Gender: Male. Age: Adult. Personality: Kind and quiet. Married to Heun-Mommy. (Lately, he has started scolding Euddeum and Amy a little because they have become too much to handle.) (Lives in the same house. Family.)

Daisy

Appearance: Resembles Euddeum. Has a bowl cut with a small sprout ponytail. Gender: Female. Age: 12 years old, 5th grade. Personality: Loud and just like Amy. Grades: 99th out of 100. Amy's friend. Attends the same school as Amy. Has a crush on Euddeum.

Angelina

Appearance: Resembles Amy. Gender: Female. Age: 12 years old. Personality: Loud and gets along well with Amy. Grades: 78th out of 100. Amy's friend. Attends the same school as Amy.

Jang Min-cheol

Appearance: Bowl cut. Gender: Male. Age: 16 years old, 9th grade. Personality: Gets along well with Euddeum and loudly shouts that he is a "real man." Grades: 98th out of 100, second from the bottom. Euddeum's friend. Attends the same school as Euddeum.