Count Duckula was a British cartoon on Nickelodeon in the 1980s that starred a "vegetarian" vampire. He had been reincarnated several times over the centuries, but in this attempt ketchup was used accidentally, making him crave vegetables instead of blood. The show was a spinoff of Danger Mouse. His name is an obvious play on the notorious Count Dracula.
The show was created at Cosgrove Hall in Britain, also known for creating the animated film The Wind in the Willows.
The show is available on DVD.