Dabi is the eldest son of the Pro Hero Endeavor, driven mad due to his neglectful & selfish actions, and becoming a villain for revenge. 
Dabi is a rude and snarky person who has no sense of respect. But, he is a calm-minded person, who is always focused and determined to complete his given tasks. However beneath this facade lies a broken, vengeful, and cruel man hellbent on a path of vengeance. He has a power called “Hellflame”, letting him shoot fire from his hands. He can be overprotective.