While there has been no confirmation on whether or not Warner Bros. Pictures will make a follow up to "The Dark Knight", story for "Batman 3" reportedly has been planned. Comic Book Movie (CBM) has just obtained information from a "plot outliner" at Warner Bros. who reveals some details of the upcoming film.
According to the source who is called "TT" by CBM, the Riddler will be the main villain and will figure out Batman's identity in "The Dark Knight" sequel. Beside Riddler, the forthcoming movie will also feature cameos of several Batman's classic enemies, such as the Penguin and Dr. Victor Fries, the alter ego of Mr. Freeze. Other characters who will possibly make appearances in "Batman 3" include Barbara Gordon, who is the daughter of Police Commissioner James Gordon, and Dick Grayson, though he will likely not turn into Robin.
Additionally, the source informed that James will mention Metropolis and possibly Lex Luthor from "Superman". The "plot outliner" further mentioned that the plot, which has Arkham Asylum figuring prominently on it, will be outlined in time for the screenwriting which will begin in February.
Back in November 2009, Michael Caine shared he was not sure that Warner Bros. will ever make "Batman 3". "I don't know if they are ever going to make another 'Batman'," the depicter of butler Alfred Pennyworth said, before adding "If they do it won't be for quite a while." However, he stated, "As for the future... if they ever make another 'Batman' I will be in, I will be the butler..."
As for the cast, Aaron Eckhart has uttered his willingness to reprise his role as Harvey "Two Face" Dent. Moreover, Johnny Depp has opened door to possibility of him joining the cast ensemble for the movie to portray the superhero's nemesis, the Riddler.