Deliberate mistake: When the penguin goes into the cemetery, he bumps a tombstone and it moves. Almost certainly a tribute to legendarily poor director Ed Wood, who Tim Burton later directed a biopic of - this exact thing happened in one of his films. (00:39:15)

Batman Returns (1992)
1 deliberate mistake
Directed by: Tim Burton
Starring: Christopher Walken, Danny DeVito, Michael Gough, Michael Keaton, Michelle Pfeiffer

Continuity mistake: In Schreck's department store, when Catwoman is doing her cartwheels, her heels collapse. (00:53:40)
More quotes from Batman Returns
More trivia for Batman Returns
Question: Why is Penguin's blood green?
Chosen answer: It is part of the mutation that caused his peculiar appearance.
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Answer: It isn't. If you look at when he dies you will see that he has cuts on his face that are bleeding red. The blue liquid is more like a bile, probably similar to saliva.