Fuji

Fuji is a tall and well-built young man with spiky hair that falls to his shoulders. His usual attire consists of a long-sleeved dark shirt and light-colored pants, complete with a pair of light shoes. When his silhouette was first shown, he appeared to be wearing a dark jacket with a chin-length collar, which also appeared to be worn closed. Fuji was a former pupil of Zenjūrō Saotome and learned spells under his tutelage. In the past, Fuji attended Shinkyōku High School, where he eventually gained recognition as the "strongest rookie" ever. However, he eventually decided to attend Ishiyama High School in the new semester following its second reconstruction. Sometime before attending Ishiyama, Fuji came into contact with the Solomon Company. He later formed a contract with Satan, one of the Seven Deadly Sins, and was labeled by the organization as one of the "Six Omens of Slaughter" , notably being one of three who were able to handle them. (Source: Beelzebub Wikia)