-This predates Arkham Asylum, that's why we see a suit that sort of resembles Nolan's Batman, with the extra armor and such.
- The Joker will be voiced by Troy Baker who played Two-Face and Robin in Arkham City along with Snow in Final Fantasy XIII (i picked roles people would know, he'll also be Joel in Naughty Dog's The Last Of Us, and played Booker in BioShock Infinite).
- Batman will be voiced by Roger Craig Smith who you know as Ezio from Assassin's Creed, Sonic, and Chris Redfield.
- Confirmed enemies is Black Mask, Death Stroke, Bane, Scarecrow, Deadshot and Killer Croc. Though most of those might just be cameos. I'm also reading somewhere that Penguin might return.
- And Kevin Conroy will be returning, and has stated at a panel that he has already spent 10 months in the studio, though whether or not he will be Batman at a later point in the game, or a new character is unknown.