Enji Todoroki, known professionally as the Pro Hero Endeavor, embodies a complex journey of relentless ambition and a subsequent, arduous quest for redemption. His defining drive emerged early: to become Japan's undisputed top hero. This ambition fueled intense training and calculated decisions, including a Quirk Marriage with ice-wielding Rei Himura. He sought an heir combining fire and ice abilities to surpass his perceived limitations against the Symbol of Peace, All Might. Though genuine affection for Rei existed initially, his obsession steadily eclipsed it. This consuming ambition dictated his family's fate. His eldest son, Toya, displayed immense promise with a powerful fire Quirk. However, training ceased when Toya's body proved incompatible, prone to self-burning. Concerned for Toya's well-being, Enji shifted focus, inadvertently neglecting him. Toya's refusal to abandon training led to an incident perceived as his death—a devastating loss Enji buried deep within. Subsequent children, Fuyumi (ice Quirk) and Natsuo (no Quirk), received little attention as perceived "failures." His fourth child, Shoto, manifested the coveted dual Quirk, becoming Enji's sole fixation. Shoto endured brutal, isolating training from infancy. Enji's escalating verbal and physical abuse towards Rei culminated in her mental breakdown, where she accidentally scalded Shoto's face, resulting in her institutionalization. This shattered the family, fostering deep resentment, particularly from Natsuo and Shoto. Professionally, Enji secured the No. 2 Hero rank by age 20, amassing an unmatched record of resolved cases. Yet, without the top spot, he deemed it hollow. His Hellflame Quirk grants pyrokinetic control: generating, manipulating, and shaping flames, regulating temperature, and enabling limited flight via foot propulsion. Key techniques include Flashfire Fist variants like Jet Burn, Hell Spider, and Hell's Curtain, culminating in the ultimate cellular-incinerating Prominence Burn. Continuous use risks overheating and stamina depletion. His combat style relies on overwhelming power and speed, augmented by sharp deductive skills. Publicly, his aggressive, no-nonsense demeanor starkly contrasted All Might's warmth, earning respect but not widespread adoration. All Might's forced retirement after the Kamino Incident propelled Enji to No. 1 by default, shattering his lifelong dream of earning the position through surpassing his rival. Facing a destabilized society and confronting his family's devastation prompted reflection. He initiated attempts at atonement: secretly visiting Rei, recalling her favorite flowers, acknowledging past wrongs to his children, and vowing to become a worthy Symbol of Peace and better father. He even sought counsel from All Might. Yet, connecting proved difficult, met with justified hatred. Believing his presence caused harm, he built a new home for his family, intending financial support from a distance. Reactions varied: Fuyumi desired reconciliation, Natsuo remained unforgiving, and Shoto acknowledged his heroism while maintaining personal distance. The Paranormal Liberation War irrevocably altered his path. Toya was revealed alive as the villain Dabi, who publicly broadcast Enji's abusive past to destroy his reputation and career. Confronted by Dabi and later his family, Enji faced the full consequences. Rei insisted they share his burden and confront Dabi. During the Final War against All For One, Enji fought desperately. He lost his right arm battling All For One and suffered catastrophic full-body burns confronting Dabi, openly acknowledging his guilt and responsibility in their final clash. A recurring dream symbolizing his absence from familial happiness solidified his resolve to protect others' futures, embracing self-sacrifice. Severely injured and wheelchair-bound post-war, Enji retired from hero work. He dedicated himself solely to atonement, visiting the critically injured Toya daily in the hospital. Following Toya's eventual death years later, Enji visited his grave each day, a testament to his enduring regret and unwavering commitment to making amends.