Main Cast:
* John Davidson as The Host (Various Roles)
* Loni Anderson as The Hostess (Various Roles)
* The Captain and Tennille (Musical Performers)
* The Harlem Globetrotters (Basketball Players)
* The Brady Kids (From the series "The Brady Bunch" - Appearing in "The Brady Kids" segment)
* The Lost Saucer (A puppet-driven science fiction adventure)
* Wonderbug (A live-action superhero adventure with puppets)
* The Banana Splits (Returning from their own series, "The Banana Splits Adventure Hour")
Other Notable Appearances:
* The Krofft Puppets (Performed in various segments and hosted "The Lost Saucer")
* Various Guest Stars (Including singers, dancers, and other performers)
Note:
* The Krofft Supershow was a variety show with a mix of live-action, puppets, and animation. It featured multiple segments and storylines.
* While the main cast is listed above, the specific characters and roles within the show's segments varied.
Let me know if you'd like to know more about a specific segment or character!