Dr. Jekyll

Dr. Jeckyll first appeared in Robert Luis Stevenson's novel "The Curious CAse of Dr. Jekyll and Mr. Hyde. The story is spoofed in a Scooby Doo, Where Are You? episode Nowhere to Hyde, The New Scooby Doo Movies episode Sandy Duncan's Dr. Jeckyll and Mr. Hyde and Scooby Doo and the Reluctant Werewolf