Who was vigo carpathia?

Vigo Carpathia is a fictional character from the 1984 film "Ghostbusters." He is portrayed as a powerful, malevolent spirit who was once a tyrant in the 16th century and later becomes the primary antagonist of the movie's climax. His ghost is depicted as seeking to regain physical form by possessing a baby, which the Ghostbusters must prevent. The character is notable for his dramatic visual design and the memorable performance by actor Wilhelm von Homburg.