Series Cast 18

1. 

   Scott Baio

   Chachi Arcola (17 Episodes)

2. 

   Erin Moran

   Joanie Cunningham (17 Episodes)

3. 

   Ellen Travolta

   Louisa Delvecchio (17 Episodes)

4. 

   Al Molinaro

   Al Delvecchio (17 Episodes)

5. 

   Art Metrano

   Rico Mastorelli (17 Episodes)

6. 

   Winifred Freedman

   Annette Mastorelli (17 Episodes)

7. Robert Pierce

   — (15 Episodes)

8. 

   Grant Heslov

   — (1 Episode)

9. 

   Jessica Walter

   — (1 Episode)

10. Lisa Lindgren

    — (1 Episode)

11. 

    Martin Ferrero

    — (1 Episode)

12. 

    Greg Finley

    — (1 Episode)

13. 

    Bill Kirchenbauer

    — (1 Episode)

14. 

    Michael Alldredge

    — (1 Episode)

15. John C. Becher

    — (1 Episode)

16. 

    Jeff Lester

    — (1 Episode)

17. 

    Don S. Davis

    Benny (as Don Totalmedia Davis) (1 Episode)

18. 

    Brian Byers

    Squelch (1 Episode)

Series Crew 12