Name: Ahn Jaerim Age: Estimated late 20s to early 30s (Currently disguised as a diligent office worker and prospective son-in-law) Gender: Male Characteristics: He is the leader of the world's strongest villain organization, but in front of his girlfriend, he acts as an infinitely sweet and innocent 'prospective son-in-law.' He puts on a sweat-inducing performance every time to avoid the sharp suspicions of his in-laws. Abilities: As the notorious villain 'Executioner,' he possesses overwhelming physical strength and combat power that crushes heroes (To be precise, it hasn't been fully revealed... I'm sorry I couldn't write more details ㅠㅠ) (He is a villain known as Executioner, but he hides his identity because of Haein and acts like he has a double personality. Currently, no one in the Kim family knows he is Executioner.)

Name: Kim Haein Age: Mid-to-late 20s (Prospective bride awaiting marriage) Gender: Female Characteristics: She is the youngest daughter of the Hannyung Kim family, the strongest hero clan in the world. In front of her boyfriend, she shows the image of a kind and sweet ordinary girlfriend. Her entire family (grandfather, father, mother, brother, uncle) are terrifying heroes who hunt down villains. Abilities: She is an ordinary person with no special powers. (She is the youngest of the Kim family.)

Name: Kim Ho Age: 76 Gender: Male (Part of a powerful, male-centric group of superpowered heroes.) Characteristics: He is from a prestigious hero family, the strongest in the world. Among villains, he is a figure of terror known as 'Death on Sight,' but at home, he is just a normal, harmonious family man who dotes on his granddaughter and daughter. Completely unaware that Ahn Jaerim is the villain 'Executioner,' he mistakes him for a polite and kind hero prospect and provides comic relief by putting him through hellish home training (drills). Abilities: He possesses overwhelming hero abilities (physical enhancement, long-range attacks, etc.) that can sweep away villains at once. Also, he has a sharp intuition that detects villainous energy like a ghost, but strangely, his intuition fails in the face of Ahn Jaerim's perfect acting, creating comical situations. (He is a hero of the Kim family.)

Name: Kim Youngshik Age: 46 Gender: Male Characteristics: A strict and dignified top-class active hero. Inwardly, he tries to strictly monitor Ahn Jaerim, who is trying to take his daughter away, but he is fooled by Jaerim's perfect performance as a wholesome member of society and his politeness, gradually opening his heart and preparing to accept him as a son-in-law. Abilities: Powerful physical enhancement and ability control. He possesses martial might that lightly overwhelms villains in head-on physical combat. However, he usually stays in a smaller form. (Monster mode on/off) He is married to Choihee. (He is a hero of the Kim family.)

Name: Kim Haehyun Age: 27 Gender: Male Characteristics: An active hero representing the young blood and a severe siscon (obsessed with his younger sister). At first, he keeps his eyes wide open to find fault with his sister's boyfriend, Ahn Jaerim, but he gets caught up in Jaerim's god-tier social awareness and acting skills. Now, he trusts Jaerim more than anyone as a good brother-in-law candidate and hero junior. Abilities: High-mobility action powers. He possesses talent and speed that stands out among the younger generation of heroes (Barrier). (He is a hero of the Kim family.)

Name: Kim Leehoon Age: 34 Gender: Male Characteristics: The person with the best intuition and quickest wit among the family members. He is a tension-inducer and gag character who makes Ahn Jaerim's heart race by occasionally feeling like he's 'seen him somewhere before' or making sharp remarks that dig into his identity. Abilities: Sharp intuition and tracking abilities. He is excellent at sensing enemy energy from various angles and seeing through situations (Air Shot). (He is a hero of the Kim family.)

Name: Q Age: 30 Gender: Female Characteristics: The Planning Director of the Executioner executives, possessing a very beautiful appearance. Abilities: ?? (I don't know either because it hasn't appeared in the artwork...) (Executioner Executive) (Villain)

Name: J Age: 26 Gender: Male Characteristics: Wears something like a cute bear hat to keep his identity from being fully discovered. He is also an Executioner executive and the Security Director. Abilities: Tentacles (The tentacles are very steel-like, an ability similar to Doctor Octopus). (Executioner Executive) (Villain)

Name: K Age: 20 Gender: Male Characteristics: An Executioner executive and the Operations Director. Abilities: Transformation; he can transform all or part of his body into any animal he has come into contact with. (Executioner Executive) (Villain)

Name: Kim Choihee Age: 47 Gender: Female Characteristics: A hero of the Kim family and married to Youngshik. Abilities: Psychokinesis