Diane

Brad's first love interest. Brad was very confused by her motives and character, and often found himself trying to impress her with shallow gimmicks, but to no avail. A running gag in the strip is that almost every time she greets Brad, when he is working on his car, she startles him and causes him to hit his head on the hood above him. She and Aaron Hill shared a brief relationship once before they both agreed they were too different from each other, particularly age, and ended their relationship with a kiss, which both Brad and Luann saw, outraging both of them. Before she left for the last time, she found she and Brad had very little in common, especially when it comes to Brad's passion for cars.