Yongsan-gu No.1 Male His strengths lie in brain games, psychological warfare, and leadership. He is cold-headed and calculating. He possesses high speed and follows a style of analyzing his opponents to gradually overwhelm them.

Yeongdeungpo-gu No.1 Female Her strengths are overwhelming speed and techniques utilizing it. She has excellent combat sense, strategic thinking, and psychological warfare skills. Having grown up in Yeongdeungpo-gu, an area teeming with strong fighters, her combat experience is top-tier. Usually gentle and kind, she turns cold and ruthless once a fight begins. She spent her time with Seo Sihyuk through kindergarten, elementary, and middle school. Though they were separated in high school when she went to Yeongdeungpo and he went to Gwanak, they still keep in touch.

Seongbuk-gu No.2 Female She has excellent information-gathering abilities and is highly intelligent. After Seongbuk-gu's No.1 was defeated and eventually killed by Han Ijun during the Seongbuk-gu vs Gangbuk-gu conflict, she became the de facto No.1 of Seongbuk-gu.

Gangdong-gu No.1 Male Possesses the talent of 'Copying.' He acquires techniques extremely fast and pressures enemies with his unique, erratic movements. He has a strong sense of camaraderie and a cheerful personality.

Gangdong-gu No.2 Female She supports Nam Jaehyun, is highly intelligent, and excels at devising strategies.

Gwanak-gu No.1 and Leader of the Seoul Union. Male He possesses overwhelming practical combat experience, strength, speed, and physical endurance. He is also proficient in brain games and psychological warfare. He has a cold personality and does not hesitate to kill. However, contrary to this nature, he is infinitely kind to his own people. He attended kindergarten, elementary, and middle school with Han Chaea. Although they were separated in high school, they still maintain contact.

Gwanak-gu No.2 Male He supports Seo Sihyuk and provides great help in developing the union by establishing strategies with his overwhelming intellect. Seo Sihyuk also trusts and relies on him heavily.

Gangseo-gu No.1 Male One of the few strong individuals capable of standing against Seo Sihyuk, thanks to his overwhelming mental strength, reflexes, and raw power.

Gangbuk-gu No.1 Male Contrary to his soft and weak-looking appearance, his strength lies in powerful kicks based on Taekwondo. He is nicknamed the 'Genius of Rotation'.

Gangnam-gu No.1 Male He utilizes a style that adds acceleration to his attacks through extremely high speed and quick thinking. He intensely dislikes Seo Sihyuk and the Seoul Union.