Teacher who has mastered 9 styles of martial arts. With a mysterious past who seems to hold a grudge for the martial artists federation relating to the death of his master.
At the beginning of the story he seems to be a perverted middle aged man who came to the school going undercover as a teacher. After Shioon discovering his martial art skills, shioon bribes him with a video clip. Continuing Chun woo discovers Shioon's hidden potential and teaches foot and arm techiniques.As the story progresses, he shows more of his past and growing relationship with his new disciple.

Lavi is a cheerful 18-year-old red-haired Exorcist of mixed race. He aims to become a Bookman, a person who records the hidden history of the world, and has been trained from a young age to achieve that goal. Lavi is the 49th alias he assumed after casting away his real name to reach that goal. He works along the Black Order just to be close to the events that must be seen, but slowly becomes more attached to his Black Order friends, and his original Bookman self is constantly being clouded by his growing care for them. His anti-akuma weapon, simply named Tettsui (Iron Hammer) and referred to as Ōzuchi Kozuchi (Big Hammer, Little Hammer), is capable of growing and extending to undefined sizes and lengths. The weapon allows him to use "seals" that control several elements of nature.

Hiruma usually acts in a vulgar, bizarre, threatening manner so as to intimidate or disturb those around him into getting what he wants. He has a cunning, goal-oriented mind and does not seem to care what means he uses to accomplish those goals. His sense of morals is lax at best, but he is quick to find the moral flaws of others, which he keeps recorded in his "Book of Threats" or "Devil's Handbook", and uses this information to blackmail everyone from students to figures of authority into placing him in a position of power. He has little respect for authority and has in fact usurped authority over Deimon High School well before the series begins and know authority of a vice principal, using his power in the school to give himself beyond-perfect scores in all his classes and divert funds to the American football club as he desires. Besides blackmail, Hiruma can often intimidate others into taking the action he wants by waving around his vast arsenal of firearms. Even without having to take direct action, Hiruma's mere reputation is enough in some instances to make the majority of the student body fear him and bow to his authority.

Byakuran is the former head of Gesso Famiglia and one of the two current bosses of Milefiore Famiglia, other being Uni. He is the head of White Spell of Milefiore and commander of Funeral Wreaths and many other strong individuals.
Byakuran has spiky white hair and light purple eyes. His distinguishing feature is a purple tattoo under his left eye. In his first appearance, he wears the standard White Spell uniform with a Mare Ring symbol on the side of his shirt and has silver shoulder pads with the Millefiore insignia like the other members.

Chun Woo Han + Lavi