Ravenclaw was founded by Rowena Ravenclaw, one of the four founders of Hogwarts. Ravenclaw House's requirements are that you must be intelligent, witty, wise, creative, and have a sense of individuality. Ravenclaw's head of house is Filius Flitwick. The Ravenclaw ghost is the Grey Lady, the daughter of Rowena Ravenclaw herself.The Ravenclaw colors are blue and bronze. Ravenclaw is represented by a Raven taking flight.