Harry Potter and the Prisoner of Azkaban question

I think Harry is a round and dynamic character. I think Harry is round because he can be, caring, angry, happy, sad, serious, or careless. I think Harry is dynamic because, Harry was a timid little kid but now he is confident and not scared. I think that Harry and Voldemort are foils. I think this because the evil of Lord Voldemort makes Harry look like a he is more of a hero, making Harry and Voldemort foils for one another. I also think that Harry and Draco are foils for each other. Harry and Draco are foils because, Draco's mean and nasty qualities, make Harry's nice and modest qualities stand out. This is what I think, what are you guys' opinions.