Enji Todoroki, professionally known as the hero Endeavor, possesses a tall, muscular build with short crimson hair, sharp turquoise eyes, and fiery facial hair forming a beard and mustache when activated. His original costume, "The Gates of Hell," consisted of a navy turquoise bodysuit adorned with flame designs across the chest, shoulders, and arms, complemented by white bracers and flame-like boots. Upon ascending to the No. 1 Pro Hero rank, his attire evolved with armor-like bracers, grill handguards on the back of his hands, shoulder pads, and a belt featuring the kanji for "Flame." Significant battles altered his physique: a fight against Nomu Hood inflicted a jagged scar stretching from his hairline to his chin on the left side of his face. In the Final War, All For One’s Rivet Stab severed his right arm, and a confrontation with his son Dabi caused severe burns across his face and body. These injuries resulted in extensive bandaging and initial wheelchair dependency. Eight years later, he regained partial mobility, requiring a cane. Permanent burn scars now cover the left half of his face and portions of the right, with Hood’s scar remaining visible. His personality formed after witnessing his father die rescuing a girl from a villain, inspiring his heroic path. He adopted the name "Endeavor" to embody his relentless drive. Early in his career, he fixated on surpassing All Might as the No. 1 Hero, an obsession that intensified when he recognized the insurmountable power gap. This led him to arrange a Quirk Marriage with Rei Himura for her ice Quirk, aiming to produce a child merging fire and ice abilities. Initially, he maintained healthier family ties, showing care for Rei and training his eldest son Toya. After Shoto’s birth manifested the ideal dual Quirk, Endeavor dismissed his other children as failures and focused solely on Shoto. He enforced brutal, abusive training on Shoto from age five, forbidding sibling contact. When Rei intervened, Endeavor grew verbally and physically violent, contributing to her mental collapse and her scalding of Shoto’s face. He hospitalized Rei and isolated Shoto further. Neglected and seeking approval, Toya persisted in training despite bodily incompatibility with his fire Quirk, culminating in a fatal-seeming incident at Sekoto Peak where Endeavor failed to act. Assuming Toya dead, he intensified Shoto’s training as justification for the loss. Professionally, Endeavor held the No. 2 Hero ranking for years, boasting a high case resolution rate but exhibiting an aggressive, no-nonsense demeanor. He resented All Might comparisons and demonstrated scant tolerance for villains, occasionally using lethal force against threats like Nomus. His efficiency-over-empathy philosophy emerged during a Vigilantes spin-off meeting, where he argued Instant Villains should be treated as criminals, opposing All Might’s compassionate stance. After All Might’s retirement, Endeavor inherited the No. 1 position but deemed it unearned, sparking a purpose crisis. A conversation with All Might about the Symbol of Peace spurred introspection. He began visiting Rei’s hospital against medical advice, leaving her favorite flowers, and attempting family reconciliation while acknowledging their resentment and his guilt. He confessed to his son Natsuo his avoidance of familial duties and concluded his family might heal better apart, purchasing them a separate home while living alone. His Quirk, Hellflame, enables fire generation and manipulation, featuring techniques like Jet Burn, Hell Spider, and Prominence Burn. Overheating posed a significant drawback, originally motivating his ice Quirk marriage pursuit. During the Paranormal Liberation War, Dabi’s revelation as Toya publicly exposed Endeavor’s abuse, causing Endeavor to vomit and collapse upon realizing he drove Toya to villainy. Bolstered by Midoriya’s faith in his capacity for change, he tearfully apologized to his family. In a subsequent media address, he accepted full responsibility for Toya’s actions and pledged personal redemption. The Final War inflicted permanent injuries, including his lost arm and extensive burns, forcing retirement. Initially wheelchair-bound, he dedicated his life to atonement, including regular prison visits to Toya. Eight years post-war, he used a cane for mobility and sustained reconciliation efforts.