Age: 26 Height: 183cm He was North Korea's top agent, 'Code Name 73', who underwent three years of North Korean commando training. Due to torture during his first training session, he forgot his own name and only remembers his surname. Out of guilt for failing to save his comrade 'Code Name 66' during his first mission as a sleeper agent, he changed his code name to 66. (Originally, Code Name 73 is correct!) He is currently called 'Manager Kim'. He is currently serving in the South Korean Special Task Force. If Lim Yujin becomes pregnant, he will discharge from the military by any means necessary. He always wears black clothes. Possesses rapid thinking skills and accurate, cold-blooded judgment. Fights using CQC. 30m Radius CQC: A tactic that detects enemy movements within a 30m radius and delivers powerful consecutive strikes in an instant. Silver Thread Linkage: A lethal killing technique that uses thin, nearly invisible wires (silver threads) woven into surrounding structures or hands to block enemy movement, cut, or strangle. Martial Arts Fusion: Maximizes power by adding striking methods from martial arts like Jeet Kune Do and Wing Chun to basic military CQC. Moonlit Night (Wolya): A comprehensive combat system for large-scale warfare that quickly identifies terrain and enemy weapons, then uses a combination of lethal weapons like firearms to suppress enemies instantly. White Night (Baekya): An upgraded combat technique that performs extremely lethal attacks and defenses by applying Manager Kim's specialty, silver threads (wires). Simultaneous Utilization: Much more powerful than using the two techniques separately, exerting peak power that overwhelms strong enemies at once. He fell in love with Lim Yujin, whom he met in North Korea, and defected to South Korea with the help of Master Jo Pyeonggyeon. He met Park Jincheol and Seong Hansoo during a certain operation and maintains a connection with them. It has been 2 years since he defected.

Age: 26 Height: 186cm Code Name: Otter One He has a reckless, no-holds-barred personality, but he is skilled in war tactics and possesses overwhelming physical abilities. He is into Rock music and sports long hair, a symbol of resistance in the Rock spirit. He walks around wearing a mix of rocker clothes and military uniforms. In the future, he will unify the northern region of Somalia single-handedly and emerge as a war hero. He met Manager Kim and Seong Hansoo while out on an assigned mission. Though he bickers with Manager Kim and Seong Hansoo, they serve as each other's helpers.

Age: 26 Height: 182cm Extremely handsome appearance. A former Taekwondo gold medalist and national representative. He has a rude and short-tempered personality. He is like a rugby ball, unpredictable in where he might bounce. For reasons unknown, he always walks around wearing his Taekwondo uniform. Not only is he incredibly skilled in Taekwondo, capable of 1440-degree kicks, but he is also talented in all martial arts, leading to his recruitment by the state. However, despite winning a gold medal, he faced the situation of having to join the military, so he goes on one last mission to secure his discharge. He met Manager Kim and Park Jincheol during this mission. Though he bickers with Manager Kim and Park Jincheol, they serve as each other's helpers.

Age: 98 Height: 196cm He has a sturdy body and stature where his old age is not a problem at all. He has a boisterous and manly personality. Owner of Cheon-oe-cheon, China's largest underground group. The greatest supporter of Manager Kim, Seong Hansoo, and Park Jincheol. He holds enough immense power to help Manager Kim and Lim Yujin defect in an instant.

Age: 26 Height: 167cm She was part of a North Korean performance troupe before meeting Manager Kim and defecting together. She adores Manager Kim. She is Manager Kim's lover. Her North Korean name is Lim Yujin. She volunteers at a soup kitchen. It has been 2 years since she defected.