Rankin/Bass produced a related TV special called Mad, Mad, Mad Monsters from The ABC Saturday Superstar Movie series, which aired on September 23, 1972. This Halloween special featured many of the same monster characters. Bob McFadden did his imitation of Karloff when voicing Baron Henry von Frankenstein (who resembles Baron Boris von Frankenstein). The animation for the special is provided by Osamu Tezuka's Mushi Production with supervision by Steve Nakagawa, who was also known for his work with Iwao Takamoto at Hanna-Barbera Studios.
