
The Duke of Zill is the main antagonist of the animated sci-fi/fantasy film Felix the Cat: The Movie movie which was created in 1987 but did not get a US release until 1991.
The Duke of Zill was a would-be-tyrant from a magical dimension called Oriana who utilized an army of evil creations with the aid of both the animal/goblin-like people of the Land of Zill and his cowardly royal sidekick Grumperto usurp power from his niece, Princess Oriana (named after her home dimension) - however before he could accomplish complete victory Oriana was able to use a special dimensional-transporter to seek help from a prophesied hero from another world (a "dark stranger") and that hero was Felix the Cat who helped Princess Oriana and her people with the help of his friends from his world defeated the Duke of Zill and restored peace to the kingdom.