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Starpulse quotes the actor as saying: "If Robin crops up in one of the new Batman films, I'll be chaining myself up somewhere and refusing to go to work."
The character, Batman's comic book sidekick, appeared in Batman Forever and Batman & Robin but was dropped for Christopher Nolan's 2005 franchise reboot Batman Begins.
The Dark Knight, which sees Bale reprise his role as the Gotham superhero, is released in the UK on July 25.
> Bale unhappy over calls to cut Ledger
More: Christian Bale, Movies
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