Main Characters Arthur Herbert "Fonzie" Fonzarelli 54 main appearances Marion "Mrs. C" Cunningham 54 main appearances Howard C. Cunningham 54 main appearances Joanie Louise Cunningham 48 main appearances Warren "Potsie" Weber 44 main appearances Richard J. "Richie" Cunningham 37 main appearances Ralph Malph 37 main appearances Charles "Chachi" Arcola 18 main appearances Alfredo "Al" Delvecchio 13 main appearances Roger Phillips 8 main appearances Lori Beth Allen Cunningham 8 main appearances Ashley Pfister 5 main appearances Jenny Piccalo 6 main appearances
Recurring Guest Characters Hank 1 guest appearances Officer O'Reilly 1 guest appearances Sticky 1 guest appearances Eugene 1 guest appearances Andrew 'Squiggy' Squiggmann 1 guest appearances Roberta 1 guest appearances Paula Petralunga 1 guest appearances Judge MacBride 1 guest appearances Mr. Conners 1 guest appearances Marge 1 guest appearances Joan 1 guest appearances Dr. Dwayne Twitchell 1 guest appearances Belle 1 guest appearances Doctor 1 guest appearances Burglar 1 guest appearances ⇤ « 1 2 3 4 » ⇥