Cast of Happy Days

It was early 1974 that we followed the adventures of the character Richie Cunningham, his friends and family in the family comedy Happy Days.

Ron Howard (Richie Cunningham), Henry Winkler (The Fonz), Anson Williams (Potsie Weber), and Don Most (Ralph Malph) of the TV Show Happy Days

Ron Howard played the role of Richie and he co-starred with Anson Williams (Potsie Weber), Donny Most (Ralph Malph), Henry Winkler (Arthur "The Fonz" Fonzarelli), Marion Ross (Marion Cunningham), Tom Bosley (Howard Cunningham), Erin Moran (Joanie Cunningham), Al Molinaro (Al Delvecchio), and Scott Baio (Chachi Arcola).
 

As the character of "The Fonze" played by Henry Winkler became the main focus of the show, Ron Howard and Donny Most left the show after six years in 1980 to persue other roles and interests.  Most and Howard would be replaced by Ted McGinley and Cathy Silvers  as different characters.

Howard and Most returned later in 1983 and 1984 for a few more episodes during the final season of the show. 

Cast of Happy Days in the early years - Front: Scott Baio (Chachi Arcola), Erin Moran (Joanie Cunningham), Tom Bosley (Howard Cunningham) 2nd row:  Lynda Goodfriend (Lori Beth), Ron Howard (Richie Cunningham), Henry Winkler (Arthur Fonzarelli aka 'Fonzie') Back: Marion Ross (Marion Cunningham), Don Most (Ralph Malph), Anson Williams (Potsie Weber), and Al Molinaro (Al Delvecchio)

Happy Days cast members Scott Baio, Cathy Silvers, Al Molinaro, Henry Winkler, Erin Moran, Lynda Goodfriend, Marion Ross, Anson Williams, and Ted McGinley

The regular cast members of Happy Days:

Ron Howard        Richie Cunningham
Anson Williams         Potsie Weber
Donny Most         Ralph Malph
Henry Winkler         Arthur "The Fonz" Fonzarelli
Marion Ross         Marion Cunningham
Tom Bosley        Howard Cunningham
Erin Moran         Joanie Cunningham
Al Molinaro        Al Delvecchio
Scott Baio         Chachi Arcola
Ted McGinley        Roger Phillips
Cathy Silvers        Jenny Picalo
Lynda Goodfriend     Lori Beth
"Arnold" Takahashi    Pat Morita

Front: Erin Moran (Joanie Cunningham), Marion Ross (Marion Cunningham),  Tom Bosley (Howard Cunningham)  Back: Ted McGinley (Roger Phillips), Lynda Goodfriend (Lori Beth), Scott Baio (Chachi Arcola), Henry Winkler ('The Fonze' Arthur Fonzarelli), Al Molinaro (Al Delvecchio), Cathy Silvers (Jenny Piccalo), and Anson Williams (Potsie Weber) of the TV show Happy Days in the 80s era