Cast
Didi ConnDidi Conn was 29 in The Fonz And The Happy Days Gang - Season 1 - Science Friction (Episode 12). Birthday: Fri, Jul 13 1951
Frank WelkerFrank Welker was 34 in The Fonz And The Happy Days Gang - Season 1 - Science Friction (Episode 12). Birthday: Tue, Mar 12 1946
Ron HowardRichie Cunningham
Ron Howard was 26 in The Fonz And The Happy Days Gang - Season 1 - Science Friction (Episode 12). Birthday: Mon, Mar 01 1954
Henry WinklerFonzie
Henry Winkler was 35 in The Fonz And The Happy Days Gang - Season 1 - Science Friction (Episode 12). Birthday: Tue, Oct 30 1945
Don MostRalph Malph
Don Most was 27 in The Fonz And The Happy Days Gang - Season 1 - Science Friction (Episode 12). Birthday: Sat, Aug 08 1953
Didi Conn
Frank Welker
Ron Howard
Henry Winkler
Don Most