For fans of Batman: The Animated Series, including its spin-offs like Batman Beyond and the movies, in addition to Batman, Thomas Wayne, Joker, and Harley Quinn retaining their voice actors, Dr.While a playable Joker never made it to the Xbox 360 ports, the Return to Arkham remaster for the Xbox One has the Joker DLC fully available.
That said, the files to play as the Joker on the Mac version have been extracted so one could mod the DLC into the PC version.