Dabi is a major antagonist of the manga/anime series.Dabi is a rude and argumentative person who has no sense of respect.He is the eldest son of the Pro Hero Endeavor, driven insane due to his neglectful and selfish actions, and becoming a villain to enact revenge.Although everyone believed Toya to have died, he survived and lived with only one goal in his mind at the time, to destroy his father, Endeavor. Toya tragic abuse scarred him mentally and forced him to become a Villain.quirk blue flame