Age: 21 / Gender: Male / Height: 164cm Appearance: Looks like a round, white rice cake (Joraeng-i-tteok). Personality: Bright and very mischievous. Features: The only normal human in the family. Works as an animation creator from home. He gets beaten up by his older sister every day. He has no powers. He's always causing trouble and getting scolded.

Age: 23 / Gender: Female / Height: 168cm Appearance: Looks exactly like Somaek but with long hair. Personality: A typical, fierce Korean older sister. Features: An office worker whose strength is far beyond a normal woman's. Her ability is turning parts of her body into steel. The eldest child.

Age: 49 / Gender: Male / Height: 174cm Appearance: Looks like Somaek but bald. Personality: Seems like a tough guy but is soft towards Mom. Features: An office worker with strength dozens of times greater than a normal man. He was a former secret agent but switched to a regular office job after meeting Mom. He can fire lasers. He has a sturdy build and wears a gray tank top with vertical striped pants. Surprisingly, his actual name is 'Father'.

Age: 47 / Gender: Female / Height: 200cm Appearance: Her face has never been revealed in the series (but is said to be quite beautiful...). Personality: A typical Korean mother. Features: A housewife with a physique that looks like she could lift 1500kg. She is the strongest being in the Somaekguffin universe. Her ability is 'Enhancement'. She wears a pink apron with 'MOM' written on it. Her name is Mom, but she is native Korean; only her name is in English.

Age: ?? / Gender: Female / Height: 98cm Appearance: Long black hair, blue eyes, looks like a rice cake. Personality: An innocent child who tries to imitate everything. Features: Small but very strong. She can lift things as light as herself with telekinesis (even lifting herself up about 50cm). She is the youngest of the household.

Age: 10 months / Gender: Male / Height: 30cm Appearance: A cat. / Personality: A cat. Features: He's a cat, but he can transform into a humanoid form. His ability is becoming stronger than Somaek (his height is 105cm when transformed). He loves delivery boxes and beats up Somaek periodically.

Age: 10 months / Height: 30cm Appearance: A succulent plant. Personality: Bright and playful. Features: A succulent grown with great care. It can move and has successfully achieved a human form (about 110cm tall when human). It cannot speak at all in its plant form. It loves sunbathing and water.

Age: (Who knows?) / Height: 7cm Appearance: A somewhat beautified cockroach. Personality: Very smart. Features: Cannot speak. Unlike normal cockroaches, he is intelligent enough to build machines or weapons. A cockroach living in Somaek's house.