Who is Frank Zane from Arnold: The Education of a Bodybuilder and what is their importance?

Frank Zane wins the IFBB Mr. Universe contest in Florida. Arnold comes in second. This is the second time Arnold is beaten in a competition. Zane's physique is elegant, well defined, and he poses like a matador or a dancer. This inspires Arnold to stay in America and learn all he can about the techniques and training of American bodybuilders.