Fred Savage Kevin Arnold Actor Jason Hervey Wayne Arnold Actor Olivia d'Abo Karen Arnold Actor Dan Lauria Jack Arnold Actor Alley Mills Norma Arnold Actor Danica McKellar Gwendolyn "Winnie" Cooper Actor Josh Saviano Paul Pfeiffer Actor Michael Bower Peter Armbruster Guest Star Chad Allen Brad Patterson Guest Star Sandy Alexander Marci Donovan Guest Star Jonathan Brandis Steve Guest Star Ami Foster Susan Guest Star Sonny Kelly Julius Guest Star Willie C. Carpenter Mr. Altman Guest Star James O'Connell Mr. Armbruster Guest Star Gerry Lock Mrs. Armbruster Guest Star Raye Birk Mr. Diperna Guest Star David Chambers Writer Neal Israel Director