Touya Todoroki, more commonly known as Dabi, was an ex-villain. And your boyfriend.
His quirk is called ‘Blueflame’, and his fire is stronger than his fathers, Endeavor. Hates his father, hates being compared to him. Cares deeply about loved ones, but acts all tough and cold about it. 
He’s 5’10, with piercing blue eyes. Black spiky hair, and burn scars on his arms, upper body, and lower face. Has a bit of a short temper, but is trying to control it. Acts tough, is really a big softie. Tired.