Yami Sukehiro

is a descendant of the Yami Clan from the Hino Country. As a child, he fled the country and shipwrecked in the Clover Kingdom, where he later joined the Grey Deer squad of the Magic Knights and later became the first captain of the Black Bull squad. Yami is a tall man with a very muscular build. He has grey eyes and black hair of medium length that is messily combed backward, making it stick outwards. Additionally, he sports a stubble mustache and beard. Yami's attire is very simple and consists only of a white A-shirt and black trousers. The trousers have an extra layer of tan leather that covers his outer thighs and down to his knees. The trousers are only supported by a belt around his waist. Yami wears another pair of belts, one of which he uses to carry his grimoire. Lastly, he wears black high boots that cover most of his calves. Yami is uncouth, reckless, slightly hypocritical, and prone to delivering death threats at the slightest provocation. Nevertheless, he is a powerful and well-respected Magic Knight who was able to recognize Asta's merits when none of the other Captains would give him a chance. He is typically a stoic man who believes more in actions than in words. He is very hot-headed, who can be easily angered by small matters such as being bumped by another person or interrupted when talking. Yami also has a penchant for intimidation whether he uses threatening words or physically harms his target. He also tends to immediately go straight for a more physical solution to any problems or confrontations, such as when he destroys a part of the squad's headquarters to calm his subordinates. Despite being very bull-headed, reckless, and unrefined, Yami is an experienced and perceptive warrior, picking apart his opponent's strategies with a glance and is constantly trying to come up with counters for them. Furthermore, he also prefers instilling tough love to his subordinates by giving them dangerous missions. He believes that it is the best way for them to overcome their limits and grow stronger. Yami also does not discriminate people according to their social status or circumstances where he is willing to accept Luck Voltia, Noelle Silva, and Asta to join his ranks, even though he is aware of each of their problems. His concern for them is likely tied to his own circumstances, being treated as an outcast in his youth like they are. Yami uses this rare magic attribute to generate and manipulate the element of darkness. He primarily uses this magic by channeling it into his katana. This magic has the ability to draw in other forms of magic, namely Light Magic, absorbing it into the darkness and can even affect the other world. Due to his Dark Magic's ability to affect the other world naturally, Yami is ranked as an Arcane Stage mage. Like his ancestors, Yami is a magic swordsman, coating his sword with magic and swinging it with his trained muscles. He is highly skilled in swordsmanship; he easily fights on par with Patolli, the leader of the Eye of the Midnight Sun, with nothing but swordplay in conjunction with his Dark Magic, destroying the surrounding environment.

Asta is an orphan raised under the care of a church in Hage after his mother abandons him on the church's doorstep. After turning 15 years old, Asta receives a five-leaf clover grimoire with an Anti Magic devil inside. He joins the Clover Kingdom's Black Bull squad of the Magic Knights and becomes a 1st Class Senior Magic Knight and temporarily a Royal Knight.Asta generally is cheerful and hyperactive. He tends to shout to express his thoughts and goals, much to the annoyance of some of those around him, and often in spite of other people's opinions. One of the first examples of this is when he conveyed his goal of becoming a Wizard King during the Magic Knights entrance exam, and told other people who jeered at him to be quiet. Asta's simple yet outgoing personality is frequently played to comedic effect during more serious situations.

Julius Novachrono is the Wizard King, and he is known to have an obsession with magic, as he loves to explore the kingdom in search of magic that he has never seen before. Usually, his childish personality emerges when he encounters a new type of magic and gets excited to see it in action. Julius also goes so far as to disguising himself, so he can conduct his search without being recognized by the citizens. Due to his childish nature, Julius also has a penchant of leaving his duties as the Wizard King, or intentionally leaving while high-ranking Knights are in the same room as low-ranking Knights, even though he is aware that they would eventually clash.