Although she could sing, play the guitar, and knew sign language, Kimberley Hart started off in the show as just your typical Valley Girl. She was a cheerleader, too. But much like Buffy The Vampire Slayer, the movie of which came out around the same time, Kimberley becomes a warm-hearted and witty fighting machine, using her gymnastics to soundly beat her enemies every time.
With the exception of being exceptionally good at gymnastics - it's what scored her a spot on the show - Amy Johnson's early life couldn't be much more different than her character's. She grew up in Cape Cod, Massachusetts, to a car salesman father and clothing store manager mother, and lived an average and humble teen life, focusing on her gymnastics. That is, until she decided to become an actress.