"Hello/Goodbye Joker," Hamill said. "I've enjoyed every minute behind the wheel of the Crown Prince's crazy car--I'm going to miss him more than I can say!!"
This is not the first time Hamill has indicated that he was done with the role. When asked at last year's San Diego Comic-Con about reports that Arkham City would be his final performance as the Joker, Hamill mused, "I keep saying that" He added that he hadn't wanted to do a sequel after the original Arkham because he takes the character seriously and wanted to go out on a high note. However, he also noted that in a number of ways, the final decision on the matter wasn't actually up to him.
While Hamill has been trying to step away from the Joker role, he has allowed for the possibility of a return. In July, he posted on Twitter, "If I do 1 last performance as The Joker, hope it's The Killing Joke!!!" The Killing Joke was a Batman story written by Alan Moore (The Watchmen, V for Vendetta) in which the Joker shoots and paralyzes Barbara Gordon.