Hellfire lived a happy life. He was born into an Evolved family and became one at the age of 15. His first kill was a Corrupted of the 3rd Tier. Of course he only dealt the killing blow, his parents were already Transcended so they had an easy job dispatching the Fire Devil.
Soon after he got enlisted into the Evolved Academy, he quickly made friends with a man named Nightmare. He was an Evolved and he had a title as well.
They went to classes together and became bestfriends. He got to know his sister Lucy and his girlfriend Bea.
He lived happily with his parents, hunted monsters and hung out with his friends. But when he was 18 his parents died on a hunting trip. He was depressed for a while, but with the help of Nightmare he got through it.
But he was never the same, he unlocked his Heratige on the day his parents died and it increased his power, with his temper. Fire is a fickle thing, it could burn slowly for days or really hot for seconds.