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 Scott Jaeck Mr. Arlo Bottner Guest Star Adam Sneller Stuart Carpazian Guest Star Scott Menville Wart Guest Star Josh Berman Harold Gruntner Guest Star Josh Peden Callio Guest Star Denise Moss Writer Sy Dukane Writer Daniel Stern Director