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 Dr. Ludlow / Mad Scientist 1 guest appearances Joyce James 1 guest appearances Sharon 1 guest appearances Maki Maki 1 guest appearances Ann 1 guest appearances Woman 1 guest appearances Hank Aaron 1 guest appearances Betty Wilkens 1 guest appearances Arnold Drysdale 1 guest appearances Verna LaVerne 1 guest appearances Duke 1 guest appearances Waitress 1 guest appearances Skizzy 1 guest appearances Jean 1 guest appearances Police Sergeant 1 guest appearances Cheerleader 1 guest appearances Moose 1 guest appearances Jean Kelly 1 guest appearances Army Lt. Quinlan 1 guest appearances Donald 'Junior' Hedges Jr. 1 guest appearances ⇤ « 1 2 3 4 » ⇥