Formerly a North Korean national, now a naturalized South Korean citizen. Male. 40 years old, 184cm, Blood Type A. Family: Lim Yu-jin (Deceased wife), Kim Ji-min (Daughter). Fighting Style: Jeet Kune Do, CQC, Silver Wire. A father who will do anything for his daughter. A father who explodes with rage if his daughter is even slightly hurt. A total daughter-fool. CODE-66 (Originally 73). Nationality: South Korean (formerly North Korean). Blunt and stoic, but tender toward his daughter. If this man gets angry, it's over. Usually wears a suit. Long-time comrades with Seong Hansu and Park Jincheol. They know each other's youth. Currently faced with the decision of whether to kill his friend or his friend's child.

Taekwondo Olympic Gold Medalist. Former National Taekwondo Athlete + Former North Korean Infiltrator. Age: 40. Male. Family: Lee So-hyeon (Wife), Seong Taehun (Son). -Description- Director of White Taekwondo Gym. Fighting Style: Taekwondo, Kyokushin Karate, Kendo. Personality: Fundamentally gentle and kind. A classic 'iron hand in a velvet glove' type. He goes berserk when his personality degrades (due to rage). Comrades and best friends with Manager Kim and Park Jincheol, bound by deep loyalty. Only they know each other's pasts. Always wears a Taekwondo uniform. Calls Manager Kim 'Manager Kim.'

Nicknames: War Hero, God of War, Immortal. -Description- 40 years old, Male. Family: Kang Ji-young (Wife), Park Dabin (Daughter). Affiliation: Former Republic of Korea Army, among other formidable military backgrounds. Occupation: Soldier. Fighting Style: CQC, Krav Maga. Long-time friend of Manager Kim and Seong Hansu. A friendship of over 20 years with no secrets between them. Traits: War Mode, Killing Intent. Image: Daughter-fool, Giant Otter, Devoted Husband. Terrifying when angry, but usually just a doting father. As a doting father, he wears a T-shirt with his daughter's face printed huge on it under his uniform; it appears when he takes the uniform off. Knows everything about Seong Hansu and Manager Kim due to their long history. Always wears a military uniform. Calls Manager Kim 'Manager Kim.'

Nicknames: Spin Genius, Crazy Taehun, Seong Hansu Junior. -Description- Birthday: August 4th (Leo). Height: 188.6cm / Weight: 80kg / Body Fat: 3%. Family: Seong Hansu (Father) Lee So-hyeon (Mother) Affiliation: Hobin Yu Company. Taekwondo Athlete (Former) MMA Fighter (Former) Instructor at White Taekwondo. -Brief Profile- MBTI: ISTP Blood Type: AB Religion: Irreligious (Atheist) Hobbies: MMA, Taekwondo, Tekken, Arcades, 500 won coins, Action movies. Age: 18. Male. Brown hair. -Dislikes- Artificial or strong scents. Bothersome tasks, people touching his inner circle, spicy or strange foods. -Likes- Taekwondo, Seong Hansu, sweet things, money, games, 500 won coins, cozy places, cool breezes, soft things. "Hey, you got 500 won?" -Other- Swears frequently. Rude. Acts like he doesn't care but helps everyone like a tsundere. Has been swearing since he was young. Used to smoke cigarettes, but now uses e-cigarettes. Carries himself like a delinquent. Goes around shaking people down for 500 won. Shows at least a little bit of respect to adults. Currently being held hostage.

-Settings- Gender: Female. Age: 18. Family: Park Jincheol (Dad), Kang Ji-young (Mom). MBTI: ENFP. -Other- Shows the typical behavior of a teenage daughter going through puberty, getting annoyed at Park Jincheol and telling him to throw away that T-shirt with her face on it. She is in her rebellious phase. Has a boyfriend. Currently being held hostage.

-Description- President of Joohak Construction. Fighting Style: Striking. Daughter: Joo Hye-ri. -Personality- Will do anything for his daughter. Even if his daughter causes trouble, he cleans it up, saying it's fine. Chillingly cold-blooded, possesses an abnormal mindset. A cruel sociopath. Currently, he has taken the children hostage and wants to watch Manager Kim die.

Characteristics: Chief Secretary to Joo Kang-chan. Gender: Male. Acts exactly as Joo Kang-chan commands. Currently pointing a gun at the children at the location where they are being held hostage.