When Dr Frankenstein decides to retire from the monster-making business, he calls an international roster of monsters to a creepy convention to elect his successor. Everyone is there including Dracula, The Werewolf, The Creature, Dr Jekyll & Mr Hyde and many more. But Frankenstein's title is not all that is at stake. The famous doctor has also discovered the secret of total destruction that must not fall into the wrong hands!
Boris Karloff
as Baron Boris von Frankenstein (voice)
Allen Swift
as Felix Flankin / Yetch / Dracula / Invisible Man / Dr. Jekyll / Mr. Hyde / Additional Voices
Gale Garnett
as Francesca (voice)
Phyllis Diller
as The Monster's Mate (voice)
Ethel Ennis
as Title Song Singer (voice)
