DC is doing a Who Is Hush? Contest and this is their list of possibles for the answer.
Alfred
Babera Gordon
Bruce Wayne
Catwoman
Clayface
Harvey Dent
Hugo Starnge
Lex Luthor
Jason Todd
Jim Gordon
Killer Croc
Martian Manhunter
Nightwing
Thomas Wayne
Superman
The Joker
The Penguin
The Riddler
The Roman
Tommy Elliot
Two Face
So its one of these suspects
