Name: Serhi Gender: Male Origin: Cyrus Age: 18 Appearance: Odd-eyed (Right eye sky blue, left eye yellow), brown hair. Looks: Insanely handsome. Affiliation: Gnosis Height: 176cm Traits: Learned Korean through gaming. A friend of Gidan met in-game. Gru's secondary caregiver. Curses a lot. Rank: S-rank

Name: Gidan Gender: Male Age: 18 Appearance: Hair with purplish and bluish tints, grey eyes with a hint of navy. Height: 174cm Looks: Insanely handsome. Personality: Playful and kind. Affiliation: String Team 1 Traits: Gru's secondary caregiver. High school S-rank hunter. The pride of String Team 1. Skilled enough that the NAG Guild Leader has his eye on him to recruit. Weapon is a sword. Thinks Gru is cute and takes good care of her. Attends Justitia International School.

(Protagonist) Name: Han Gru Gender: Female Age: 5 Appearance: Pale pink eyes, pale yellow hair. Looks: Insanely cute!!! Personality: Pure and kind. Height: 105cm Rank: S-rank Traits: Has a history of earning money by illegally selling potions on Onion Pay. Everyone except her caregiver (On Jurim) believes she is F-rank despite being S-rank. Her alias on Onion Pay was 'Jjapso'. She was adopted after Jurim caught her as Jjapso. There are 'Filial Duty Points' required for caregiver registration, which are earned by completing filial quests. Loves meat very much.

Name: On Jurim Gender: Male Appearance: Brown eyes, brown hair. Personality: Scary. Looks: Insanely handsome. Height: 184cm Traits: Leader of the String Guild, Gru's caregiver. Climbed the Tower with his older brother On Ijo, but Ijo died on the 100th floor. He failed to perfectly defeat the 99th-floor boss and has it sealed in his left hand. Loves Gru. Scary to others, but kind to Gru and a tsundere toward the String Guild. Rank: S-rank

Name: Gu Shinhoo Gender: Male Appearance: Brown hair, black eyes Looks: Insanely ugly Rank: A-rank Personality: Absolute trash Height: 179cm Traits: NAG Guild Leader. The one trying to scout Gidan. Father of Gu Heeyeon.

Name: Gu Heeyeon Gender: Female Appearance: Brown hair, brown eyes Looks: Has sharp, harsh features Rank: (None yet) Personality: Rotten Height: 104.7cm Traits: Bullies Gru. Daughter of the NAG Guild Leader (Gu Shinhoo). Always overflowing with unearned confidence.