Henry Winkler

as Ira

as Nigel (voice)

as Mr. Ferguson

as Jeffy Tentacles (voice)

as Henry Winkler (uncredited)

as John Hancock(1 ep)

as Self-Interviewee

as Mayor Kibner

as Self

as Self - Host(28 eps)

as God

as Self - Actor and Best-Selling Author(1 ep)

as Hector the Teen Driver / Self(1 ep)

as Self

as Self (voice)(1 ep)

as Self

as Self(1 ep)

as Tatty(10 eps)

as Smiley (voice)

as Self

as Uncle Al

as Santa (voice)(1 ep)

as Self(1 ep)

as Self - Guest(3 eps)

as Self - Guest(4 eps)

as Self

as Gerald(1 ep)

as Dr. Brenner

as Bobby

as Wilhand Trickfoot (voice)(3 eps)

as Melvin (voice)(1 ep)

as Uncle Joe

as Dr. Eric Nostrum(1 ep)

as Self - Actor(8 eps)

as Jeffy Tentacles (voice)(1 ep)

as Fritz (voice)(20 eps)

as Boris (voice)(2 eps)

as Boris / The Count / Mr. Friend Doll (voice)(1 ep)

as Jepson (voice)

as Self

as Arthur Herbert Fonzarelli

as Dr. Cotton

as Alex's Dad (voice)(1 ep)

as Keith (voice)

as Self

as Arthur Herbert Fonzarelli (archive footage)

as Self(1 ep)

as Sy Mittleman(2 eps)

as (archive footage)

as Self

as Self(3 eps)

as Self - Panelist(1 ep)

as Wizard Longbeard (voice)(1 ep)

as self

as Self(1 ep)

as Gene Cousineau(32 eps)

as Leo Wasserman(1 ep)

as Grandpa Bill (voice)

as Bailiff (voice)(1 ep)

as Uncle King Julien (voice)(6 eps)

as Testimonial

as Self (archive footage)

as Mr. Rock

as Self

as Self(12 eps)

as Ed Koch

as Self - Guest(2 eps)

as Self(1 ep)

as Self(1 ep)

as Stanley Warner

as Uncle King Julien (voice)(11 eps)

as The Snowman (voice)(2 eps)

as Various (voice) (archive sound)

as Henry Winkler (voice)(1 ep)

as Self - Guest(5 eps)

as Self(1 ep)

as Self - Guest(2 eps)

as Mr. Rock(39 eps)

as Nacho Cheese (voice)(1 ep)

as Self(1 ep)

as Zenas Fisk Wilber(1 ep)

as Self

as Captain Cool (voice)(1 ep)

as Nathaniel Zib (voice)

as Senator Faxler(1 ep)

as Marty Streb

as Leonard Rascal(1 ep)

as Nathaniel Zib (voice)

as Narrator

as Flip(1 ep)

as Marty Alexander(1 ep)

as Bob Weatherbee

as Self

as Nathaniel Zib (voice)

as Yeti (voice)(1 ep)

as Mall Santa (voice)(1 ep)

as Arthur 'Fonzie' Fonzarelli (archive footage)

as Nathaniel Zib (voice)

as Self(1 ep)

as Professor Nathaniel Zib(17 eps)

as Burton

as Principal (voice)(1 ep)

as Self

as Self - Guest(3 eps)

as Eddie R. Lawson(25 eps)

as Dr. Saperstein(6 eps)

as Uncle Ralph

as Sy Mittleman(81 eps)

as Judge Newman

as Self(1 ep)

as Ambush Bug (voice)(1 ep)

as Self(1 ep)

as Limousine Passenger

as Happy Herb

as Rep. "Spike" Crandall

as Self

as Self (uncredited)

as Ted

as Fullerton

as Johnny Bernstein

as Sy

as Dr. Stewart Barnes(22 eps)

as Self(1 ep)

as John Adams (voice)(1 ep)

as Christmas Tree / Jason Bourne / Nerd's Father (voice)(1 ep)

as Self

as Child Protection Services Agent (voice)(1 ep)

as Roger Bloom(3 eps)

as Self(3 eps)

as Personal Budget Expert(1 ep)

as Self - Guest(2 eps)

as Fonzie ("Buddy Holly") (archive footage)

as Barry Zuckerkorn(32 eps)

as Self(2 eps)

as Norville (voice)(40 eps)

as Dr. Maniac (voice)(2 eps)

as Self

as Stanley's Father

as Self - Guest(9 eps)

as Sal Monella (voice)(1 ep)

as Self - Audience Member (uncredited)(1 ep)

as Self(1 ep)

as Dr. Jack Slocum(2 eps)

as Self(4 eps)

as Henry Winkler

as Walter Dunleavy(1 ep)

as Chef Ray

as Self

as Larry Steinberg

as Lester Martin(3 eps)

as Edwin Todd(1 ep)

as Self(1 ep)

as Sharkface(1 ep)

as Sharkface (voice)(1 ep)

as Jeffy Tentacles (voice)(1 ep)

as Fergus McGarrity(1 ep)

as Edward Crow

as Self

as Coach Klein

as John Quinn

as The Scary Monster (voice)(1 ep)

as Self(1 ep)

as Skip Fine

as Jack Potter

as Dr. Henry Olson(3 eps)

as Self (voice)(1 ep)

as Arthur Himbry (uncredited)

as Self(1 ep)

as Steven Moore

as Mr. Newsome(1 ep)

as Dad

as Arthur 'Fonzie' Fonzarelli (archive footage)

as Monty Richardson(13 eps)

as Tony

as Self - Guest(2 eps)

as Self(1 ep)

as Self(2 eps)

as Self(1 ep)

as Henry Winkler(1 ep)

as Self(1 ep)

as Marty Klein

as Self - Choir Member

as Ramrod (voice)(1 ep)

as Self (voice)

as Carl Conway (voice)

as Self - Guest(1 ep)

as Self - Guest(1 ep)

as Immigrant

as Self

as Self (Interviewee)

as Carl Conway (voice)

as Wilton Newberry (uncredited)(1 ep)

as Self (archive footage)

as Self

as Self

as Himself / Arthur 'The Fonz' Fonzarelli

as Narrator (voice)(1 ep)

as The Fonz (voice)(26 eps)

as Self

as Chuck Lumley

as Self

as Self

as Fonzie(24 eps)

as Benedict Slade

as Arthur "The Fonz" Fonzarelli (archive footage)

as Self

as Self

as Self

as Fonzie(1 ep)

as Andy Schmidt

as Self - Host (Television Version)

as Jack Dunne

as Self - Uncredited

as Arthur Fonzarelli(3 eps)

as Bob Kline

as Self(1 ep)

as Self(2 eps)

as Butchey Weinstein

as Mannie

as Arthur Fonzarelli(252 eps)

as Auditioning Actor (uncredited)

as Miles Lascoe(1 ep)

as Himself(34 eps)

as Steve Waldman(1 ep)

as Self(1 ep)

as Self(1 ep)

as Self - Presenter(1 ep)

as Self(1 ep)

as Self(1 ep)

as Self(1 ep)