Her name is Dr. Harleen Quinzel—better known to her friends and enemies as Harley Quinn. Her very-very-ex-boyfriend the Joker may be the Clown Prince of Crime, but Harley’s the Queen of Coney Island! So when the zombie apocalypse threatens her li’l seaside stretch of paradise, who else would ya call to give the undead a blow to the head?

It's the Joker's world…we just die in it! It's another typical day in Gotham City. Superman, the world's most dangerous criminal, has burst free of his cell in Arkham Asylum. The only one who can track him down is the world's greatest hero, Bizarro. Their epic battle destroys property owned by the bald but brilliant billionaire Lois Lane…wait-what?! If Superman isn't crazy, that means the whole world has gone insane, and only one man can be responsible. Somehow Batman's greatest nemesis, the Joker, has received the power to reshape reality to his own mad whims. The world now is defined by chaos and death, and there is absolutely nothing anyone can do about it. It's impossible to defeat a god. Unfortunately, someone forgot to tell Superman. Armed with nothing more than his will, the Man of Steel will put an end to the reign of Emperor Joker…or die trying. Join Jeph Loeb (SUPERMAN/BATMAN), Joe Kelly (JLA), Ed McGuinness (SUPERMAN/BATMAN), Doug Mahnke (SUPERMAN/WONDER WOMAN), and others in a twisted world under the rule of Emperor Joker. Collects SUPERMAN #160-161, ADVENTURES OF SUPERMAN #582-583, SUPERMAN: MAN OF STEEL #104-105, ACTION COMICS #769-770 and EMPEROR JOKER #1!

Having played out every trick on the fine citizens of Gotham City, Harley Quinn—the Joker's former girlfriend—decides that another city deserves her attention. After all, why menace one city when you can menace two? Especially if the second has a Man of Steel guarding it. Harley hightails it to Metropolis, with allies Poison Ivy and Bizarro in tow. Writer Karl Kesel and artist Terry Dodson continue their now classic run on this beloved title in HARLEY QUINN: WELCOME TO METROPOLIS, collecting issues #14-25.

When last we checked in with Harley Quinn, she ate, she banged, and she killed…but now it's time for something a little different. Fresh out of the events of Harley Quinn: The Animated Series season three, Harley has found herself a part of a highly unlikely team-the Bat-Family! Meanwhile, Poison Ivy has found herself prepping for her new job-leader of the Legion of Doom! But while Harley and Ivy adjust to their respective new roles, a ghost from Ivy’s past enters the fray and threatens the relationship between everyone's favorite clown and plant couple!

The creative team that transformed Harley Quinn forever returns to shake up her world once more-and this time, the gloves are off! Harley Quinn has avoided Gotham City ever since she broke up with The Joker and found a home in Coney Island. But when she gets an offer she can't refuse, she has no choice but to slip back into the city as quietly as she can, hoping to be gone before anyone-especially her ex-learns she's been there. But for Harley, "as quietly as she can" is plenty loud...and before she can say "Holee bounty hunters, Batman," The Joker's sicced every super-villain in the city on her pretty ombré head-and the only team tough enough (or crazy enough) to come to her defense is the Birds of Prey…if they can put up with her. Collects Harley Quinn & the Birds of Prey #1-4.

CRIME'S GREATEST COUPLE, TOGETHER AGAIN! It's the earliest days of the romance between antiheroine Harley Quinn and the superbly psychotic super-villain The Joker—but there's already trouble in paradise. When Harley accidentally reveals the location of Mr. J's secret headquarters, all H-E-double-hockey-sticks breaks loose…and the only thing worse than having Batman hot on their trail is the wrath of The Joker himself! Can Harley soothe the savage beast? Can The Joker chill out for once in his miserable life? Can the Dark Knight lighten up? Can one woman with a gigantic hammer change the face of comics forever? Travel back to the roots of the DC Universe's wildest love story in Harley Loves Joker, from writers Paul Dini (Batman: The Animated Series) and Jimmy Palmiotti (Harley Quinn) with artist Bret Blevins (Harley Quinn)!

Our favorite little troublemaker, Harley Quinn, takes on Comic-Con International: San Diego in this over the top issue. She'll have to battle long lines, crazy crowds and the dreaded con crud, all in the quest to get her own comic book published.

If you thought you'd seen all the mayhem Harley was capable of unleashing with the help of an all-powerful genie and infinite wishes...well, we wish you'd known better!

In a new direction for the series, Harley attempts to juggle being a full-time psychiatrist with her own criminal activities. But the unbalanced people she has to treat are keeping her very busy-and she's wanted for the murder of a police officer. Then, Harley gains powers beyond those of normal humans thanks to Poison Ivy's experiments. But every gift has its price, and now Harley faces the consequences. Plus, Harley signs on for a mercenary gig to hunt down a guy on the lam and retrieve an unnamed object of limitless value for him. Collects HARLEY QUINN #26-38.