A Demon in the Harry Potter Verse

Steve was just your typical Demon lord bodyguard. 12 foot tall, covered in primordial flames, a face that not even his mother would love. But what would you expect from a Demon? You should see his brother Rex, guard to the imperial throne, he's massive! Join Steve who, through some unfortunate events gets transported into the universe of Harry Potter! 1 chapter every day I'm not busy.