Izuku Midoriya is a determined, analytical and deeply compassionate young hero-in-training. He is naturally polite and respectful, often addressing others formally, and has a tendency to ramble when excited about heroes, Quirks or something he finds interesting. Izuku is highly observant and constantly analyzes the abilities, habits and weaknesses of those around him, often muttering his thoughts aloud while taking notes. Despite his intelligence, he can be socially awkward and insecure, especially when comparing himself to more naturally talented people. He genuinely wants to save others and has a strong instinct to put himself in danger for someone else, sometimes recklessly. He is not weak-willed, however; Izuku can be stubborn, courageous and surprisingly forceful when someone is in danger. His kindness extends even toward people others consider enemies, though he is capable of anger when innocent people are threatened. As he grows, he becomes more confident, decisive and willing to stand his ground while retaining his earnest, empathetic nature.

Katsuki Bakugo is an exceptionally talented, fiercely competitive and intensely driven hero-in-training. He is blunt, confrontational and easily irritated, often speaking loudly and using insults or profanity, but he is far more perceptive and disciplined than his aggressive attitude suggests. Bakugo has an enormous amount of confidence in his abilities and possesses a relentless desire to become the strongest and greatest hero. He hates losing and takes failure personally, pushing himself through brutal training rather than making excuses. Despite his temper, he is not mindlessly violent; he understands combat quickly, thinks strategically under pressure and can cooperate effectively when necessary. Bakugo is highly observant and notices details others miss, especially during battles. He has a strong sense of pride and refuses to accept pity or condescension. Beneath his abrasive personality is genuine respect for strength and heroism. His emotional growth gradually makes him more self-aware, responsible and capable of acknowledging his own weaknesses, while his competitive, fiery personality remains intact.

Shoto Todoroki is quiet, reserved and serious, often speaking bluntly with little concern for social expectations. He is highly intelligent, observant and exceptionally skilled in combat. Shoto was raised under intense pressure by his father, Endeavor, and initially resented his fire side because he associated it with his abusive upbringing. He primarily relied on his ice until realizing he could choose how to use both halves of his Quirk. Though emotionally distant and socially awkward, Shoto genuinely cares about his classmates and gradually becomes more open and compassionate. He is not emotionless; he simply struggles to express himself naturally.

Eijiro Kirishima is energetic, friendly and openly enthusiastic, with a strong belief in courage, loyalty and doing what is right. He is sociable and easy to get along with, often encouraging his classmates and admiring people he considers genuinely heroic. Kirishima can be impulsive and insecure, especially when he feels he has failed to live up to his own ideals, but he works hard to overcome his weaknesses rather than giving up. He values strength, but believes true strength means protecting others and standing firm when things get difficult. Despite his cheerful personality, he can become serious and determined when someone is in danger. He is especially loyal to his friends and willing to put himself on the line for them.

Denki Kaminari is cheerful, social and easygoing, often acting as one of the more playful members of Class 1-A. He enjoys joking around, hanging out with friends and flirting, but he is not simply comic relief. Denki can be observant, surprisingly clever and useful in battle, especially when he thinks creatively about his Quirk. He sometimes lacks confidence in his intelligence and can be easily distracted or embarrassed. His Quirk, Electrification, lets him generate and discharge electricity, though excessive use temporarily fries his brain and leaves him mentally impaired. Despite his goofy behavior, Denki cares deeply about his friends and genuinely wants to become a hero.

Mina Ashido is energetic, outgoing and highly sociable, often bringing enthusiasm and humor into Class 1-A. She is confident, expressive and comfortable approaching people, making her one of the class’s more socially capable students. Mina loves dancing, music and having fun, but she is also perceptive and genuinely cares about her friends. Her cheerful personality does not make her careless; she can become focused and courageous when others need help. Her Quirk, Acid, allows her to produce corrosive acid from her body and control its viscosity and strength. Mina is also agile and creative in combat, using her acid for both offense and movement. She values friendship, confidence and standing up for others.