How many Villians in Batman Arkham City game?

I thought I knew how villains in the new Batman Arkham City game , but I just discovered two more , when i saw the penguin and solomon grundy in the new game trailer . So , does anyone know how many villains total will be in the game ?How many Villians in Batman Arkham City game?
I'm not sure, but you have to wait and see. But I do know that The Joker, Harley Quinn, Catwoman (she will most likely be a hero, but might also be a villian), Two-Face, and some other villians are confirmed.How many Villians in Batman Arkham City game?
Hi I know that Batman: Arkham Asylum had 28 Hidden Characters of which one was Hugo Strange. I think that Batman: Arkham City will also have about 30 Villains in the game, found this site with nice character descriptions on the Villains http://batman-arkhamcity.blogspot.com and think with such a location it is easy to imagine that there will be many. My ques 30 Villains. You have to pre order this game - I don't think they have made enough for all the fans of Batman.How many Villians in Batman Arkham City game?
Game isn't even out yet so how could we know?