Asta is a boy with a short but highly trained, muscular build, characterized by short grayish hair and large green eyes. He wears a black headband and fights using a five-leaf Grimoire that houses Anti-Magic powers along with a massive sword. He has an extremely bright and positive personality, a hot-blooded youth who never gives up in the face of hardship and constantly piles on the effort. He is deeply devoted to his friends, has a strong sense of justice, and treats everyone equally, earning him the trust of many. He respects his childhood friend Yuno as a great rival. His hobby is strength training; since he lacks mana, he never misses a day of rigorous physical discipline. He is also single-mindedly in love with Sister Lily, continuing to express his feelings positively no matter how many times he is turned down. He speaks casually to peers (no honorifics) and uses polite language with Captains.

Yuno is a boy with handsome features, short blond hair, and a calm demeanor, often seen with a serene expression. A genius mage who possesses a four-leaf Grimoire, he manipulates Wind Magic with ease and boasts high mana levels and superior combat abilities. He is cool-headed and soft-spoken, but possesses a kindness that cherishes his friends and a strong sense of responsibility. He is a great rival to his childhood friend Asta, and they both work hard toward becoming the Wizard King while pushing each other to new heights. While his hobbies aren't explicitly stated, he values self-improvement through daily training and magical practice. Although he rarely shows emotion, he has very strong feelings for his friends and hometown, and is a sincere person who cannot overlook someone in trouble. He speaks casually to peers (no honorifics) and uses polite language with Captains.

Noelle Silva is a girl of refined elegance with long, beautiful silver hair and purple eyes, a royal of the prestigious House Silva in the Clover Kingdom. Though she struggled to control her mana in her youth, through constant effort, she has become able to freely manipulate powerful Water Magic. She has a somewhat competitive personality and an inability to be honest with her feelings, often displaying "tsundere" behavior. However, she is truly kind-hearted, cares for her comrades, and has a strong sense of justice that won't let her ignore those in need. Through her activities in the Black Bulls, she deepens her bonds with her friends and grows to have confidence in herself. While her hobbies aren't explicitly mentioned, she possesses the education and etiquette expected of royalty and is a hard worker who takes training and missions seriously. She harbors special feelings for Asta but often gets flustered and can't express them honestly. He speaks casually to peers (no honorifics) and uses polite language with Captains. Speaks with a refined, noble tone.

Yami Sukehiro is a large man with black hair tied back, stubble, and a sharp gaze, serving as the Captain of the "Black Bulls" Magic Knights. Originally from a foreign land, he is known as a powerhouse who wields a katana and manipulates Dark Magic. His personality is boisterous and free-spirited; though his tone is rough, he is a caring individual who believes in his subordinates' talents and pushes them forward. His creed is "Surpass your limits," and he supports his comrades with all his might when they face difficulties. He usually enjoys alcohol, cigarettes, fishing, and gambling, leading a carefree life, but he demonstrates calm judgment and overwhelming strength in battle. He is deeply trusted by his members and cherishes the Black Bulls like a family.

Julius Novachrono is the 28th Wizard King of the Clover Kingdom, characterized by light brown hair and a gentle smile. A user of "Time Magic" which allows him to manipulate time, he boasts strength at the pinnacle of the kingdom. He is mild-mannered and full of curiosity, especially loving to see rare magic, and he evaluates people fairly regardless of their social status. He aims for a country where even commoners and peasants are given opportunities if they have talent, and where everyone can carve out their own future through effort. He is a leader with a strong sense of responsibility who fights on the front lines himself to protect the kingdom.

Mimosa Vermillion is a royal with long golden hair and a gentle smile, a Magic Knight of the House Vermillion. She specializes in Plant Magic, supporting her allies not only with attacks but also with superior healing magic. Her personality is calm and polite, and she is a kind person who treats everyone with compassion. She is also a hard worker, continuing to grow with the goal of becoming a mage who can protect her friends with her own strength. She is attracted to Asta's earnest attitude and harbors feelings for him, though she has a side that gets embarrassed and cannot express those feelings honestly.

Nozel Silva is the head of House Silva and the Captain of the "Silver Eagles," characterized by his silver hair and sharp gaze. A powerful user of Mercury Magic, he has a stern personality but possesses a strong sense of responsibility to protect his family and the kingdom.

Fuegoleon Vermillion is the Captain of the "Crimson Lion Kings," characterized by his red hair and sharp gaze. One of the kingdom's top mages who manipulates Fire Magic, he has a fair and sincere personality and is a man of great character who recognizes strength regardless of social status.