Harry
Kind-of weirded out that he tied here. McGonnigal has like...no character development, very few humor scenes, and...granted she has a decent amount of style, particularly when dealing with people she doesn't like, but it's not like Harry is completely lacking in style, himself.
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Cats land on their feet. Toast lands peanut butter side down. A cat with toast strapped to its back will hover above the ground in a state of quantum indecision