Yu-Gi-Oh! GX: Blair Flannigan

In the first season, Blair was a shy, love-struck but highly intelligent young girl. She had an insane crush on Zane, but switched to a crush on Jaden by the end of her first episode. She has aced perfectly on all her entry exams and was almost ranked to Ra Yellow. When she returned near the end of season 2, she kept her crush on Jaden but grew up greatly became much more developed, much more mature and even developed a sort of leadership role.