Velma

Velma Dinkley is a fictional cartoon character in the Scooby-Doo franchise. She is usually seen wearing a baggy orange turtleneck sweater, a short red pleated skirt, knee high socks, Mary Jane shoes, and a pair of black square glasses, which she frequently loses and is unable to see without. She is seen as the "brains" of the group and also serves as Fred Jones' third-in-command.