Rankin/Bass' Mad, Mad, Mad Monsters. My late friend Bob McFadden did the voice of Baron Von Frankenstein and recorded a voice mail message for me as Baron. He was also the voice of Frankenberry, Milton the Monster, Fearless fly, Lovable Truly, Cool McCool, Jingle Bells in the Year without a Santa Claus, Snarf in Thundercats and many others!