Name	Known for
Ron Howard Richie Cunningham Richie Cunningham See fewer	Arrested Development (2003)
Henry Winkler Arthur 'Fonzie' Fonzarelli Arthur 'Fonzie' Fonzarelli See fewer	The Waterboy (1998)
Marion Ross Marion Cunningham Marion Cunningham See fewer	Superhero Movie (2008)
Anson Williams Potsie Weber Potsie Weber See fewer	Happy Days (1974)
Don Most Ralph Malph (as Donny Most) Ralph Malph (as Donny Most) See fewer	Happy Days (1974)
Erin Moran Joanie Cunningham Joanie Cunningham See fewer	Joanie Loves Chachi (1982)
Tom Bosley Howard Cunningham Howard Cunningham See fewer	Happy Days (1974)
Cindy Williams Shirley Feeney (archive footage) Shirley Feeney (archive footage) See fewer	Laverne & Shirley (1976)
Pat Morita Arnold Arnold See fewer	The Karate Kid (1984)
Penny Marshall Laverne DeFazio (archive footage) Laverne DeFazio (archive footage) See fewer	Laverne & Shirley (1976)
Ed Peck Kirk (archive footage) Kirk (archive footage) See fewer	Bullitt (1968)
Darrell Fetty Frankie (archive footage) Frankie (archive footage) See fewer	Hatfields & McCoys (2012)
Jeff Conaway Rocko (archive footage) Rocko (archive footage) See fewer	Grease (1978)
Susan Lawrence Vivian (archive footage) Vivian (archive footage) See fewer	Mork & Mindy (1978)
Ken Lerner Frankie (archive footage) Frankie (archive footage) See fewer	The Goldbergs (2013)
Manuel Padilla Jr. Squirt (archive footage) Squirt (archive footage) See fewer	American Graffiti (1973)
Tom Ruben Milton (archive footage) Milton (archive footage) See fewer	Poison Ivy (1992)
Hillary Horan Girl in Red Skirt (archive footage) (uncredited) Girl in Red Skirt (archive footage) (uncredited) See fewer	Young Doctors in Love (1982)
Kit McDonough Girl in Pink Sweater (uncredited) Girl in Pink Sweater (uncredited) See fewer	Homeward Bound: The Incredible Journey (1993)
Lora Marie Taylor Girl in the booth at Arnold's Soda Shop (uncredited) Girl in the booth at Arnold's Soda Shop (uncredited) See fewer	X-Men: The Last Stand (2006)
Heather Warren Blonde in Red Jacket (uncredited) Blonde in Red Jacket (uncredited) See fewer	Happy Days (1974)