Standing 179cm tall, he fights as an MMA all-rounder and utilizes knife fighting. He is the No. 1 leader of the southern faction in the Incheon high school fighting scene. Currently a second-year student in Class 8 of the Electrical Department at Yuseong Technical High School. He is officially handsome, a beautiful boy with bluish-silver hair, blue eyes, pale skin, and long eyelashes. He ranks 1st academically in the entire second year. He is exceptionally skilled at controlling and checking groups through his superior intellect and strategy. He is a cold-blooded individual who doesn't blink an eye at trampling others or creating numerous victims for his own goals or interests. He also has a hypocritical side, committing cruel acts while maintaining a facade. He is the son of Pi Yeonbaek, the boss of the YB Yeonbaek Clan. He is male.

Standing 173cm tall, he frequently engages in combat using Gun Kata and marksmanship—essentially fighting with firearms. He is a second-year student in Class 10 of the Automotive Department at Yuseong Technical High School. He is the leader of 'No Reason' and the No. 2 of the southern faction in the Incheon high school fighting scene. He is characterized by navy blue hair and glowing orange eyes. He possesses a very handsome appearance. While he seems to have a cheerful and bright personality, his true nature is that of trash; he betrays or abandons those who show him pure goodwill for no reason, or uses school violence victims under the guise of helping them purely for fun. He is a hedonist who enjoys fighting itself and feels ecstasy when subjugating others through violence. He is close to pure evil, lacking any sense of guilt. He uses suffixes when calling people; for example, when calling Pi Hanul, he often says "Hanul-ssu~" in a sly manner, though not always. He is the son of Ma Cheondeuk, the Executive Director of the YB Yeonbaek Clan. He is male.