MusicalCharacters: 10 male 7 female Cast can be expanded for large groups This abridged 90-minute version is perfect for school groups. Goodbye gray skies hello blue! Happy days are here again with Richie Potsie Ralph Malph and the unforgettable "king of cool" Arthur "The Fonz" Fonzarelli. Based on the hit Paramount Pictures television series Happy Days A New Musical reintroduces one of America's best loved families the Cunninghams -- yes Howard