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Trivia
Cassandra springs all the arch criminals from prison. We see Joker, Riddler, Penguin, Egghead, Catwoman and King Tut and hear them laughing (dubs of the original actors' voices). But a close look reveals them all to be doubles. Apparently the budget didn't cover paying Cesar Romero & co. to appear in such a short scene. See more...
Other: Riddler says that his "universal wax solvent" can eat through anything. Which begs the question, just what is that vat he cooks the stuff up in made of? We see the wax burn through solid steel vault doors. So it also ought to be eating through the vat, the floor and the bedrock, and sizzling its way down to the Earth's core.






