When I first saw this topic, I immediately thought of Neville Longbottom. He was always a favorite of mine, from the time of his standing up for what he felt is right, no matter who was pressuring him to do otherwise. (And gee, having the 'trio' telling him what to do? And he still said 'no'? Kudos to Neville!)
He also, as a child, had an upbringing of being looked down upon (albeit from a different point of view than that of Harry Potter and the Dursleys). Imagine being held upside down over a drop of many feet, in order to (hopefully) bring out the 'wizard' in him. What other things had been done to him, in hopes of him fitting in (and so his family wouldn't have to apologize for his existence)?
His relatives feared that Neville might be a Squib, though this was disproved when his great-uncle Algie was holding him out of a window by his feet when he was offered some lemon meringue and let go. Miraculously, he bounced. Previous to this, there were various attempts to make him show signs of magic, including dropping him off Blackpool pier, where, according to Neville, he nearly drowned.
~ Harry Potter Wiki
Yet here he is, knowing how he is regarded and yet ... so brave.
So how would the story look if it had been told from his point of view? I cheered loudly when he said "I'll join you when hell freezes over! Dumbledore's Army!" (Yes, I was reading the book at the time, but ... in the movie theatre, did I cheer then? Ah ...
Second thought was of Remus Lupin. He's one of the best of the best. I was so saddened when he died in book 7. (Him and Fred and Hedwig and Tonks ...) But that's another post.