Kimberly starts the series as a stereotypical valley girl, but with a heightened awareness for her friends. Throughout the series, she is the member of the team most likely to fire off a sarcastic or witty retort. However, as the series progresses, she becomes a deeper and kind-hearted person, due to experiences such as switching bodies with the nerdy Billy Cranston and being turned into a punk after Baboo administers a potion to one of Kimberly's drinks. She also displays a cunning, clever and intuitive side, also inherited from her time in switching bodies with Billy.