9. He Was Supposed To Cameo In The Dark Knight Rises
Had Heath Ledger not died before The Dark Knight was released, Christopher Nolan's final Batman movie would have been very different. It's hard to say how much, but the filmmaker has revealed that he did plan to address The Joker in some way, but didn't want to risk dishonouring his memory by doing so after his death. The novelization did however address his fate, possibly an indication that The Joker was in an early draft of the script. The book revealed that the villain was rumoured as being locked deep within Arkham Asylum in solitary confinement to forever atone for his despicable actions in Gotham City.