A harpy, but rather than the normally bird-brained, carefree girls you usually see, this one is smart and serious(Which was triggered by being called "Bird-brain" when she was younger).

She's not very popular, however, as she often flies around on her way to school to bother the others in her class to make sure they aren't late(She can fly direct to school, and thus is never late).

So, instead of a bird-brain, she acts like...a harpy...go figure.