Simply put, Harry Potter was described in the books as slightly shy and introverted, this was more than likely the cold family members and the whole closet deal. This would be an AU where Harry, instead of simply taking it without any real problem turned to something else to take his mind off of the abysmal home life. Namely comic books; this may have been done to death before and temptation to stop reading at this point is more than likely reaching a boiling point within you, but just hear me out. Right, in comic books the villains are over the top, they gain everyone's attention, their plans never work but they almost always come out perfectly fine, most notably the really hammy villains. What if Harry, with his childish mind saw this as a good thing? He could gain the attention that any child in his situation would have craved and get off pretty much scot free. He could mimic any villain you want, ranging from the silly Joker (Not the nasty gritty one as cool as he is it wouldn't suit this.) to the insanely amusing Penguin. Just take a moment to digest that, take it, use it as you will and...Don't judge me.