They say he was trying to steal posters and other items related to the new Batman movie from a cinema lobby.
Officers arrived at the theater to find employees restraining a man wearing a purple suit, a green wig and face paint just like Heath Ledger wears in "The Dark Knight."
Officials say they expect 20-year-old Spencer Taylor to be charged with larceny and malicious destruction of property.
Taylor is scheduled to be arraigned next month.
