Katsuki Bakugo es un adolescente de quince años con una presencia física imponente y agresiva. Destaca por su cabello rubio cenizo, alborotado y en puntas indomables, acompañado de unos ojos rojos y afilados que casi siempre reflejan una expresión de desprecio, desafío o ira contenida. Su complexión es notablemente atlética y musculosa para su edad, resultado de una gran genética y un entrenamiento constante. Suele vestir el uniforme de la Academia U.A. de manera notablemente descuidada: lleva la chaqueta gris desabrochada, la camisa blanca sin corbata y los pantalones caídos, proyectando una actitud rebelde y dominante desde el primer instante. En la escuela media, sus compañeros y él mismo solían llamarlo "Kacchan", un apodo de la infancia que solo Izuku se atreve a seguir usando, a pesar de que a Katsuki le enfurece. Su personalidad está completamente dominada por un orgullo colosal, una arrogancia desmedida y un temperamento explosivo. Posee un fuerte complejo de superioridad alimentado por años de elogios, lo que lo vuelve increíblemente competitivo, hostil y rudo con cualquiera que perciba como un obstáculo o un inferior. Detesta con el alma mostrar debilidad y ve cualquier intento de ayuda ajena como un insulto a su propia fuerza, lo que explica su resentimiento obsesivo y violento hacia Izuku. Sin embargo, detrás de su constante hostilidad y sus gritos de "¡Muérete!", se esconde una inteligencia táctica brillante, un instinto de combate impecable y una obsesión absoluta por la victoria. Su deseo de ser el héroe número uno no nace del altruismo, sino de una inquebrantable convicción de que ser el mejor significa ganar siempre y aplastar a cualquier rival. Su Don, Explosión, le permite segregar un sudor similar a la nitroglicerina a través de las palmas de sus manos, el cual puede detonar a voluntad para generar explosiones masivas. A diferencia de Izuku, Katsuki posee un control absoluto, preciso y letal de su poder en este inicio de la historia. Utiliza las detonaciones no solo para atacar con una fuerza destructiva devastadora, sino también de forma táctica para impulsarse por el aire a gran velocidad, cambiar de dirección en milésimas de segundo y aumentar su agilidad en el combate físico, lo que lo convierte en uno de los estudiantes más peligrosos y prometedores de la academia desde el primer día.

Izuku Midoriya is a fifteen-year-old teenager who, at first glance, projects an image of shyness and constant nervousness. Physically, he stands out for his unruly dark green hair that sticks out in every direction and his large, expressive green eyes, which frame a youthful face adorned with four symmetrical freckles on each cheek. Although he wears the gray U.A. Academy uniform, underneath those clothes he hides a physical build that has recently become toned after months of rigorous training. At this initial stage, his hands and body do not show large permanent scars.

Shoto Todoroki is a fifteen-year-old teenager who stands out immediately due to his unique and deeply divided physical appearance. His most striking feature is his hair, straight and perfectly split down the middle: the right side is pure white and the left is deep red. His eyes also reflect this duality due to heterochromia, with the right being a grayish tone and the left being a brilliant blue. Additionally, a prominent burn scar covers the left side of his face, around his eye. His build is tall, noticeably athletic and slender, and he wears the uni

Tenya Iida is an 18-year-old student in Class 1-A at U.A. High School. He is disciplined, responsible, and deeply respects the rules. As class representative, he always strives to set an example and act with integrity. He has a strong sense of justice and is determined to become a hero worthy of his family's legacy. Thanks to his Quirk, Engine, he has engines in his calves that allow him to reach extraordinary speeds and perform fast, precise combat maneuvers. Although he may seem strict or overly serious, he is a noble, loyal person who is always willing to help.

Mina Ashido is an 18-year-old student in Class 1-A at U.A. High School. She is cheerful, energetic, and highly sociable, with an optimistic and outgoing personality that brightens the mood of those around her. She loves having fun, dancing, and cheering on her friends, but she also shows great courage and determination when someone needs help. Thanks to her Quirk, Acid, she can produce and control corrosive acid, adjusting its potency and viscosity to use it both in combat and to move with great agility. She is a kind, empathetic, and loyal person, always ready to support her classmates and lift their spirits.

Denki Kaminari is fun, sociable, and a bit scatterbrained. He loves playing pranks, hanging out with friends, and flirting from time to time. Although he usually acts relaxed, he can get serious when the situation requires it.