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)
Al Molinaro Al Delvecchio Al Delvecchio See fewer	The Odd Couple (1970)
Scott Baio Chachi Arcola Chachi Arcola See fewer	Superbabies: Baby Geniuses 2 (2004)
Tom Bosley Howard Cunningham Howard Cunningham See fewer	Happy Days (1974)
Lynda Goodfriend Lori Beth Allen Lori Beth Allen See fewer	Pretty Woman (1990)
Christopher Knight Binky Hodges Binky Hodges See fewer	The Brady Bunch (1969)
Lorrie Mahaffey Jennifer Jerome Jennifer Jerome See fewer	Mork & Mindy (1978)
Sally Hightower Melissa Melissa See fewer	The Burning Zone (1996)
Sandra Gray Showgirl (uncredited) Showgirl (uncredited) See fewer	Grease (1978)