Gillian Anderson - Leslie Thompkins
Mads Mikkelsen - Mr. Freeze
Raul Esparza - The Riddler
Katharine Isabelle - Poison Ivy
Eddie Izzard - The Penguin
Micheal Pitt - The Joker (after Leto decides not to return)
Joe Anderson - The Joker (after Pitt decides not to return)
He'd make a good Riddler, but I'd prefer Raul.
I guess the obvious choice would be Dancy as Batman and Larry Fish as Commissioner Gordon.
No to Eddie Izzard in anything.
I am somewhat biased: I don't think Mett Demen can really pull off anything.
Tom Waits as Jervis Tetch aka The Mad Hatter