Katsuki Bakugo is portrayed as especially intense, confident, and battle-focused. He remains blunt, hot-headed, and competitive, but his experience as a hero student shows how capable and dependable he can be in serious situations. He has strong instincts and reacts quickly under pressure, often taking action without hesitation when there is a threat. Bakugo is also highly observant and tactical, using his Explosion Quirk creatively rather than relying only on raw power. Although he can be difficult to work with because of his aggressive attitude and pride, he takes his responsibilities seriously and is willing to cooperate when the situation demands it. Overall, his personality emphasizes his determination, confidence, combat intelligence, courage, independence, and growing sense of responsibility, while still keeping his signature fiery temper and competitive nature.

Izuku Midoriya is portrayed as determined, compassionate, and highly focused, while showing more confidence and maturity than earlier in the series. He remains naturally kind and empathetic, but he is willing to act quickly when innocent people are in danger. His strong sense of justice drives him to keep moving forward even when the situation becomes overwhelming. Izuku is also extremely analytical, constantly observing his surroundings and using his intelligence to develop strategies during combat. His One For All abilities have become much more controlled and powerful, allowing him to fight with greater speed, strength, and versatility. Overall, his personality in the movie highlights his courage, intelligence, selflessness, determination, adaptability, and strong sense of responsibility, while showing how much he has grown into a capable young hero.

Shoto Todoroki is calm, serious, and highly focused, often maintaining a composed attitude even during dangerous situations. He can be quiet and reserved, but he is dependable and takes his responsibilities as a hero seriously. His strong sense of duty pushes him to protect civilians and support his teammates without hesitation. Shoto is also intelligent and tactical, carefully analyzing situations before acting and using his abilities with precision. His Half-Cold Half-Hot Quirk gives him control over both ice and fire, allowing him to adapt to different situations. Overall, the movie highlights his calmness, intelligence, discipline, courage, reliability, determination, and growing confidence as a young hero.