"*while packing his fortune away* I'm crazy enough to fight the Batman, but the IRS?? No thank you!"
"*after seeing the video footage of Victor Fries's transformation into Mr.Freeze* My god...
Mr.Freeze: Yes, it would move me to tears if I still had tears to shed *freezes Batman*"
"Harley! Where's Harley at?? The laundry hasn't been done yet, the hyenas haven't been fed, and I can't find my pants, where is Harley at??
Henchmen #1: remember, you canned her boss.
The Joker: She'll come back, she always comes back.
Henchmen #2: Um boss? *hands Joker the newspaper*
The Joker: *he reads the newspaper article about Harley and Poison Ivy's crimewave*
*Camera cuts to the outside of the Joker's hideout as the Joker's scream is heard*"
"I'm your worst nightmare.
"Jingle Bells! Batman smells! Robin laid an egg! The Batmobile lost a wheel and the Joker got awaaay!
"He's ripping me off. I'll protest. Yeah. I'll sue. Then, I'll rip his lungs out. And I will, too.
"Oh please, Mr. Kaiser. You of all people should have realized there'd be a joker in the deck.
"Actually, I'm Irish."
"But hey, that's the downside of comedy, you're always taking shots from people who don't get the joke. Like my dad, or Batman."
"They sure don't make straight jackets like they used too. I should know."
"Welcome, my eboned-winged adversary. You have taken the bait as I knew you would. Now, prepare to meet your end within in my aviary of...Doom!"
The Mad Hatter:
"Are you the dreamer or merely part of someone's dream?"
"Sorry for the intrusion sir, but at least you've been robbed by a man with impeccable taste."
R'as Al Ghul:
"Like you said detective: This is not over."
"Long time no see, Harv. You're still looking half-good."
"Half of me wants to strangle you..."
"And what does the other half want?"
"To hit you with a truck!"
"We used to date."
Joker & Penguin:
The Mad Hatter:
"You're mighty in Gotham, Batman but in Wonderland, The Mad Hatter reigns supreme!"
"You killed Captain Clown! YOU KILLED CAPTAIN CLOWN!!! Just for that, Batman..."
"Get out of my face!"
"Harley Quinn:I,m having a bad day! I,m sick of people trying to shoot me, run me over and blow me up! I didn't even get to keep my new dress and I actually paid for it!"
"Fear... is power."