[quote=@Helo]

Plotting: With his background, being both very poor and a muggle-born, a lot of students dislike or even hate him. Being the sort who doesn't take crap, especially from snobby upper crust types, he frequently gets into fights with those who have more skill and experience than he does. He desperately wants to become something better than what he is, to make his name worth something and is willing to do almost anything to achieve his goals.  

[/quote]

My teacher is going to have a soft-spot for outcast muggle-born students. :3