Thread:Tupka217/@comment-220364-20130718234906/@comment-1038387-20130719000144

Ah hell, sleep is overrated.
 * Bats
 * Dick
 * Gordon
 * Montoya
 * Bullock
 * Hamilton Hill
 * Summer Gleeson
 * Joker
 * Penguin
 * Catwoman
 * Riddler
 * Two-Face
 * Scarecrow
 * Ivy
 * Ra's and Talia
 * Freeze
 * Ventriloquist
 * Hugo Strange
 * Clayface
 * Mad Hatter
 * Killer Croc
 * Man-Bat
 * Batgirl

It also mentions Calendar Man and Gentleman Ghost, but they weren't used on the show.