[3] The series also featured new characters (the Frankenstones, the Cavemouse) as well as older characters (Penny, Wiggy, Moonrock and Schleprock of 1971's The Pebbles and Bamm-Bamm Show and 1972's The Flintstone Comedy Hour on CBS, Al Capp's the Shmoo from his show The New Shmoo which aired on NBC in 1979, and Captain Caveman from his own series on ABC in 1977 which lasted three seasons).

A series of gags, educational spots, games, how-to-draw and a dance-of-the-week were featured in-between the six segments every week.

[4] In this segment, Fred and Barney are part-time police officers assisted by the Shmoo as a trainee where they work under the direction of Sgt.

[5] To disguise himself as Chester, Captain Caveman wore a pair of glasses and a tie (similar to the Clark Kent persona used by Superman).

These sequences were story edited and the character of Cavemouse was developed by notable animation director Tex Avery, the last project he worked on before his death.