Luna Lovegood.

What a pretty name, the nargles told her. It suits you perfectly. If they call you "loony" ignore them. We'll be here for you.

She wonders around at night, looking for signs of crumpled-horn snorkack . She smiles at the most serious issues, knows more then she lets on, never lets anyone get away from her and has never moved on from smelling the roses and singing in the rain.

She is loony. She is loveable. She is LUNA.