Villainous: Mad Hatter and Poison Ivy in Arkham City

At the rate Batman: Arkham City is adding villains, Batman’s nemesis in any follow-up will have to be Copperhead.
Who else is left? Clock King? Anyway.
During the latest episode of ‘Qore’ (available to PlayStation Plus subscribers), two more villains for the Arkham City rogue’s gallery were confirmed. One new to the game series, and one returning.
Poison Ivy appeared in Arkham Asylum, while Mad Hatter will be another fresh face to deal with during one of the game’s side-missions.
For more about Arkham City, and how those side-missions will fit into the title, have a look at the IncGamers interview with Rocksteady’s Dax Ginn.
Source: shacknews.com