<p>'Kotaku' has reportedly been tipped in on new multiplayer features, in the upcoming game 'Arkham City'. Unlike the two other games, the game is said to have a "multiplayer mode" and you will have a wide variety of characters to play.</p><p>"during at least one section of multiplayer, you play as a member of Joker or Bane's gang while trying to take down Batman and Robin. The villains involved—who may be playable and customizable—include Killer Croc, Deadshot, Firefly, Black Mask, Deathstroke, and "some kind of Electroman character," our tipster said. (Maybe Electrocutioner?)"</p><p>I am curious to find out more about this option. I would have preferred, instead, if we could choose to play as a member of the bat family and kick butts with our friends (free roam) around Gotham but we'll have to wait and see what this new feature will be like!</p>

- Well, first of all the name of the game is Arkham Origins..... if you weren't trolling, and these are still only rumors.

the last part of the OP would be the only thing that would get me excited....a kind of CoOp style gameplay with you being able to choose between characters like Batman, Nightwing, Red Robin, Robin, all of the different Batgirls, and Azrael

This.....

Source?