Jack Wild did not like the songs for the film, especially "If I Could." He said he had a sore throat on the day he recorded it. He referred to Martha Raye as "a right old cow."
Sid Krofft wanted Bette Davis to play Boss Witch. He called and asked her if she'd consider taking the part. Davis was so offended that she was being asked to portray a witch that she hung up on him.
Some of the rarest and most sought-after Sid & Marty Krofft collectibles are a set of blacklight posters produced in 1970 by Royal Screen Craft which depict scenes from the film.
Cass Elliot literally lived next door to Sid Krofft and took her role in the film as a favor to him.
First collaboration ever for eventual Songwriter Hall of Fame inductees Norman Gimbel & Charles Fox who stayed partners after Pufnstuf and went on to write "Killing Me Softly with His Song", "I Got A Name", "Ready To Take A Chance Again" and many other popular songs for TV and film.