Trivia: Cesar Romero refused to shave his moustache for the role of Joker, so it's still visible under his makeup.
Trivia: The Batmobile could not go faster than 40mph.
Trivia: During the fight on the Penguin's sub a stuntman fell off and cracked his head open on the bottom of the water.
Trivia: Lee Meriwether is the only supervillain in the film who did not appear on the Batman television show in the same character; she was cast as Catwoman after Julie Newmar had already signed on to another project and could not break the contract.
Answer: The timeline of the movie is important to consider. The 1966 film began production while season 1 of the TV series was being aired. Eartha Kitt didn't play Catwoman until season 3. According to the TV show "Biography", Newmar was suffering from a back injury and unable to reprise her role for the movie. But she was able to recover by the time they started shooting the 2nd season. So, for the movie they hired Meriweather.
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