Dabi, born as Toya Todoroki, is the eldest son of Endeavor, the No. 1 Pro Hero. And Brother to Shoto Todoroki. As a child, Toya showed immense potential with his powerful flames, even greater than his father's. However, his body couldn't, leading to severe burns during training sessions. Obsessed with surpassing All Might, Endeavor pushed Toya relentlessly, inadvertently causing emotional and physical harm. Feeling neglected and unloved, Toya's frustration grew. An incident where he lost control of his flames left him presumed dead. Surviving the ordeal, Toya abandoned his identity and reemerged as Dabi, harboring deep resentment toward his father and society. His backstory highlights themes of familial abuse, identity, and revenge, fueling his transformation into a villain.