Ben Savage Cory Matthews Actor William Daniels George Feeny Actor William Russ Alan Matthews Actor Betsy Randle Amy Matthews Actor Will Friedle Eric Matthews Actor Lily Nicksay Morgan Matthews Actor Rider Strong Shawn Hunter Actor Danielle Fishel Topanga Lawrence Actor Anthony Tyler Quinn Jonathan Turner Actor Danny McNulty Harvey 'Harley' Keiner Guest Star Jason Marsden Jason Marsden Guest Star Shay Astar Paula Kelly Guest Star Darlene Vogel Katherine 'Kat' Tompkins Guest Star Jonathan C. Kaplan Herbert Guest Star Adam Scott Senior Guest Star Blake Soper Joseph 'Joey the Rat' Epstein Guest Star Will Estes Alex Guest Star Herschel Sparber Delivery Guy Guest Star Ethan Suplee Frankie Stechino Guest Star Bob Larkin Janitor Bud Guest Star Michael Jacobs Executive Producer Rebecca Herbst Executive Producer Bob Tischler Executive Producer David Kendall Executive Producer