Stan Burns and Mike Marmer quit their jobs as head writers on "The Carol Burnett Show" (1967) to work on this show. Both were previously writers on "Get Smart" (1965).
C.H.U.M.P. stood for Criminal Headquarters for Underworld Master Plan.
A.P.E. stood for Agency to Prevent Evil.
An album of songs performed by The Evolution Revolution was released by ABC/Dunhill records.
The chimpanzees were given gum to chew so that their mouths would move to imitate the speech of the voiceover actors.