Peter is a twelve year old boy. That's the best way to describe him: he's precocious and inquisitive, sneaking around and spying on his older brothers and father to figure out the ways of the world. He's fiercely independent (or wants to be, anyway); fights with his dad always include the phrase “you're not the boss of me!” When he has a problem, however, he has no problem going to any of his family and asking for their help. He will never admit it, but he looks up to his brother Arthur to the point of mimicry. He also wants to run away to an island somewhere so he's always surrounded by the ocean air; at the same time, he wants to become the Minister of Magic (after, of course, having been head of the Aurors for years.)