Enji Todoroki, publicly recognized as the Flame Hero Endeavor, rose to become Japan’s second-ranked pro hero with an unmatched record of resolved cases. Witnessing his father’s death during a villain rescue galvanized his ambition to surpass all heroes. By age twenty, he claimed the number two position yet remained eclipsed by All Might’s insurmountable power, fueling obsessive despair. This drove him to arrange a Quirk marriage with ice-wielder Rei Himura to sire an heir capable of toppling All Might’s legacy. Initially, Enji displayed authentic care for Rei, recalling her favorite flower and sustaining a functional household. Their eldest son Toya inherited firepower surpassing Enji’s Hellflame but lacked heat resistance, rendering his Quirk self-destructive. Though Enji halted Toya’s training for safety, Toya persisted. Enji then fathered more children to redirect Toya’s focus. Fuyumi and Natsuo manifested ice Quirks, incompatible with his ambitions. Fourth child Shoto inherited dual fire and ice abilities, becoming Enji’s designated "masterpiece." This triggered Enji’s descent into relentless abuse: he isolated Shoto from siblings, enforced brutal training from age five, and struck Rei when she interfered. Rei’s mental collapse culminated in her scalding Shoto’s face, prompting Enji to institutionalize her. Consumed by jealousy and neglect, Toya perished in a fiery accident on Sekoto Peak—a tragedy Enji witnessed but failed to stop, later confessing he "got him killed." Professionally, Enji embodied aggression, prioritizing efficiency over empathy and showing zero tolerance for villains. He publicly feuded with peers, notably urging lethal force against Instant Villains in Naruhata, clashing with All Might’s restraint. His volatile temper and dismissiveness polarized public opinion, though his tactical genius and Quirk mastery were uncontested. All Might’s retirement thrust Enji into the unearned role of number one hero, sparking introspection. He sought All Might’s counsel on becoming a Symbol of Peace, visited Rei’s hospital, and pursued family reconciliation. Admitting past abuses to his children, he accepted their hatred while pledging atonement. Mentoring Shoto, Izuku Midoriya, and Katsuki Bakugo, he emphasized controlled power application through pragmatic instruction. Despite these strides, he faltered in connecting, often withdrawing into self-loathing and believing his absence necessary for his family’s peace. Toya’s survival as the villain Dabi shattered Enji’s progress. Dabi’s nationwide exposure of Enji’s abuse triggered the hero’s public breakdown, where he tearfully apologized to his family. During the Paranormal Liberation War, Enji battled High-End Nomus and Tomura Shigaraki, sustaining critical injuries—facial scarring and right-arm loss. Facing Dabi, he absorbed his son’s self-immolating flames to shield others, nearly dying. He publicly shouldered full blame for Dabi’s actions, vowing redemption through heroism. After All For One’s defeat, Enji retired permanently due to his injuries, using a wheelchair then a cane. He committed his remaining years to amends: visiting comatose Toya daily until his death, then regularly attending his grave. Despite extensive burns and mobility constraints, he persisted in supporting his family from afar.