Casanova Frankenstein is a fictional character from the 1996 comedy film *Mystery Men*. He is portrayed as a flamboyant and eccentric supervillain who seeks to take over the world using his mind-control abilities. The character is known for his elaborate schemes and over-the-top personality, making him a memorable antagonist in the film. In *Mystery Men*, Casanova Frankenstein is played by actor Geoffrey Rush. He battles a group of inept superheroes who are trying to stop his plans. The film combines elements of comedy and superhero genres, showcasing the challenges faced by the unlikely heroes against a villain with a unique flair.