Enji Todoroki, professionally known as the Flame Hero Endeavor, stands tall with a muscular build, short spiked crimson hair, and sharp turquoise eyes. His facial hair typically manifests as flames, revealing stubble when deactivated. A prominent scar runs from his hairline to his chin on the left side, sustained during combat against a High-End Nomu. Later conflicts with All For One and his son Dabi inflicted severe burns across his body and cost him his right arm. Post-war, he requires a wheelchair and later a cane for mobility, bearing extensive scarring. His hero costume, The Gates of Hell, features a navy blue bodysuit with flame patterns across the torso and shoulders. Upgrades after attaining the number one hero rank included redesigned armored bracers, shoulder pads, flame-venting grills on the handguards, and a belt bearing the kanji for "Flame." Endeavor’s resolve to become a powerful hero ignited after witnessing his father’s death during a villain attack. His quirk, Hellflame, allows extensive fire manipulation but dangerously elevates his body temperature with prolonged use. Achieving Japan’s second-highest hero ranking through exceptional case resolution rates, he fixated on surpassing the undisputed number one, All Might. Recognizing his limitations, he arranged a marriage with Rei Himura for her ice quirk, aiming to breed a successor with combined abilities to overcome his weakness. This obsession spiraled into severe familial abuse. After three children failed to inherit the ideal quirk combination, Shoto Todoroki was born with both fire and ice capabilities. Endeavor isolated Shoto for brutal training while neglecting Fuyumi, Natsuo, and Toya. He abused Rei verbally and physically until her mental breakdown, where she scalded Shoto’s face, leading to her institutionalization. Endeavor initially trained Toya as a successor despite unsuitable physiology but ceased over safety concerns. Toya’s secret training culminated in his apparent death at Sekoto Peak, which Endeavor blamed on Rei. All Might’s retirement forced Endeavor into the number one hero position, an outcome he resented as unearned. This triggered introspection into his life’s purpose and familial crimes. He consulted All Might on becoming a symbol of peace, shifting focus from rivalry to heroic responsibility. He initiated visits to Rei, remembered her favorite flowers, and attempted reconciliations with his children, though Natsuo remained hostile over Toya’s fate. Concluding his presence harmed the family, he purchased them a separate residence and lived alone. Professionally, Endeavor demonstrated capable leadership despite his abrasive demeanor. He mentored Shoto, Izuku Midoriya, and Katsuki Bakugo during their work-study program, enhancing their combat effectiveness. His tactical prowess emerged during collaborations like the High-End Nomu battle with Hawks. Public perception stayed mixed, contrasting his harshness with All Might’s charisma. The revelation that Toya survived as the villain Dabi exposed Endeavor’s abuses nationally. Dabi’s public denouncement triggered widespread condemnation. During their confrontation, Endeavor faltered under guilt until his family intervened, vowing collective healing. He publicly accepted responsibility for Dabi’s actions and committed to redemption. In the final war against All For One, he sustained critical injuries causing permanent disability. Post-retirement, Endeavor dedicated himself to atonement. He regularly visited the comatose Toya until his death, then attended Toya’s grave daily. He reconciled with his family, acknowledging their support in rebuilding his broken spirit. Despite irreversible physical and reputational damage, he persisted in amending his past actions.