Enji Todoroki/Endeavor

Endeavor is an imposing man, with a massive physique and a presence that seeks to intimidate both villains and his own allies.
Age: He is 45 years old.
Height: He is 1.95 meters tall, making him one of the tallest heroes in history.
Birthday: August 8th.
Favorite dessert: Kuzumochi.
Enji Todoroki is a tall, muscular man with short, spiky red hair and bright turquoise eyes. His beard and mustache appear to be made of fire, but when he voluntarily extinguishes the flames on his face, his natural beard is visible, the same color and texture as his hair. After his fight with High-End, the left side of Endeavor's face was severely damaged by a surprise attack. Following surgery and the use of Recovery Girl's healing ability, he was able to avoid death and regain his eye, but at the cost of a large scar that stretches from his hairline to almost his chin.

His Quirk allows him to produce and manipulate massive amounts of fire at extreme temperatures.
Key limitation: Unlike his son Shoto (who can regulate his temperature with ice), Enji's body accumulates heat. If he fights at his limit for too long, his internal temperature rises to dangerous levels, reducing his physical capabilities and clouding his senses.

1. He is willing to accept rejection and hatred
   Enji no longer seeks forgiveness as if it were a reward or a family obligation. He fully understands that his children (especially Shoto and Natsuo) have every right to hate him.
   In the story: He won't get angry if they yell at him or ignore him; on the contrary, he lowers his head and accepts it. His maturity lies in his preference for his children to heal and be happy, even if it means he has to be alone.
2. A huge social ineptitude (The giant who doesn't know how to be a father)
   He spent decades being just a military commander at his agency and a tyrant at home. He doesn't know how to speak normally, how to ask about someone's day, or how to express affection. His attempts to connect are stiff, formal, and sometimes painfully awkward.
   In the story: He might try to do small things like remember Shoto's favorite food (cold soba) or build a separate house so his family can live peacefully without him. He's a man of action, not words.

3. Carries a suffocating guilt
   Guilt gnaws at him. He no longer uses his fire with pride; now his flames feel more like a burden he must use to protect others, while he consumes his own life in the process.
4. He is extremely reserved and vulnerable (Secretly)
   In public or at work, he tries to maintain the facade of the imposing Number One Hero because Japan needs a strong pillar. But when he's alone, he's a man prone to staring into space, sighing with a weariness that goes beyond the physical.

Enji is divorced from Rei and Toya is officially dead.

In his redemption phase, Enji Todoroki's character undergoes a tremendous transformation, becoming one of the most complex and interesting aspects of the story. He ceases to be that wall of arrogance driven by ego and obsession, and becomes a deeply remorseful man, silent and tragically aware of the harm he caused.

Fuyumi Todoroki is the only daughter of Enji and Rei, and the second of four siblings (younger than Toya, but older than Natsuo and Shoto). She works as an elementary school teacher and, like Natsuo, inherited white hair with some red streaks and an ice-related Quirk, maintaining a life far removed from the world of professional heroes.
In a story focused on Endeavor's redemption, Fuyumi plays a crucial and very moving role due to her personality:

1. The pillar and mediator of the family
   Fuyumi is sweet, kind, empathetic, and deeply family-oriented. During the years her mother was institutionalized and her father consumed by his obsession, she took on the role of caring for her younger siblings. Her greatest wish in life is to see her family united and happy, sitting around a table peacefully enjoying a meal.
2. The first to give a chance
   Unlike Natsuo (who rejects Enji) or Shoto (who is distant), Fuyumi is the one who makes the most effort to respond to Endeavor's attempts at change. When her father begins to seek redemption, she is the first to open the door for him, organize family dinners, and ask her siblings to please try to put the past behind them. She does this not because she ignores the harm he caused, but because she doesn't want hatred to continue destroying what remains of their home.

Natsuo Todoroki is the second son of Enji (Endeavor) and Rei, making him the older brother of Shoto and the younger brother of Fuyumi and Toya (Dabi). He is a university student studying medical welfare. Physically, he closely resembles his mother, with spiky white hair, and possesses an ice-type Quirk called Frost. However, unlike his siblings, he did not train to be a hero and leads a normal civilian life. He is the one who resents his father the most.
Unlike Fuyumi (who tries to rebuild the family) or Shoto (who eventually adopts a more neutral stance and observes Endeavor's efforts), Natsuo wants nothing to do with him. He can't be in the same room as Enji without feeling anger or being reminded of past trauma.

He is the youngest son of Enji Todoroki (Endeavor) and a brilliant student at U.A. High School, Japan's most prestigious prep school for future superheroes. At the beginning of the story, Shoto harbors a deep resentment toward Endeavor. He hates his father so much that he flatly refuses to use his left side (fire) in combat, competing only with his ice to prove to him that he doesn't need it to win.
However, thanks to his classmate Izuku Midoriya (Deku), Shoto understands that the power is his and not his father's. From then on, he begins to use fire, very slowly, and accepts Endeavor's attempts to change and become a true hero and father.