Dr. Von Goosewing is a mad scientist and vampire hunter, a villain from Count Duckula who is a spoof of Abraham Van Helsing. He is a goose, as his name suggests, and speaks in a German accent. Von Goosewing wears an outfit not unlike that of Sherlock Holmes with a pair of spats. Von Goosewing often flies a dirigible with 'VG' written on it.
He pursues Count Duckula relentlessly, never able to comprehend that he is harmless. When not inventing some new machine to hunt vampires with, he relies on an old fashioned blunderbuss which is loaded with a wooden stake (although, curiously, it sometimes actually fires laser beams).
He is a terrible scientist, often getting maimed by his own crack-pot inventions. He is also supremely unobservant, and often bumps into Duckula and converses with him for several minutes without realising to whom he is talking.
Von Goosewing has an assistant (who never appears on screen) named "Heinrich". Von Goosewing often calls for Heinrich, and Heinrich is often blamed for Von Goosewing's mistakes. In the TV series, "Heinrich" seems to be just a figment of Von Goosewing's imagination, an imaginary friend, but the comic book version of the characters by Marvel reveal that Heinrich is actually his former assistant who is always complaining about his paltry wages. Von Goosewing mentions that Heinrich threatened to resign but is still with him. Apparently Heinrich quit, but his former employer failed to realise it.
The Marvel comic books based on the show also add a supporting character to him: his niece Vanna, on whom Duckula has a crush. This affection is reciprocated and the two have a romance during the comic's run, much to Von Goosewing's chagrin; Goosewing pursues Duckula with greater fervour as he seeks to 'protect' his niece from him.