William Zabka – 54

William Zabka played the villain Johnny Lawrence in The Karate Kid. In order to convincingly portray a character who was a black belter in karate, William had to take crash training courses in the martial arts niche to perfect his performance and deliver a believable act! He sure accomplished what he set out to do, with a little help from a background in wrestling. He later went on to earn award nominations for filmmaking. He continues his work in acting, producing, and screenwriting until today.