It's no laughing matter to Harley Quinn when her occasional partner Poison Ivy gets herself a new sidekick—Robin, the Boy Wonder?! Will the joke be on Harley or the teen hero?
Brian Michael Bendis, Geoff Johns, Scott Snyder, Tom King, Brad Meltzer, Paul Dini, Louise Simonson, Peter J. Tomasi, Marv Wolfman, Dan Jurgens, Richard Donner, Jim Lee, John Cassaday, Clay Mann, José Luis García-López, Jerry Ordway, Patrick Gleason, Olivier Coipel & Curt Swan
Geoff Johns, Dennis O'Neil, Brian Michael Bendis, Paul Dini, Priest, Warren Ellis, Tom King, Scott Snyder, Kevin Smith, Peter J. Tomasi, James Tynion IV, Kelley Jones, Steve Epting, Dustin Nguyen, Neal Adams, Alex Maleev, Doug Mahnke, Tony S. Daniel, Joëlle Jones, Greg Capullo, Jim Lee, Becky Cloonan, Alvaro Martinez Bueno, Amanda Conner, Jason Fabok & Mikel Janin
Bill Finger, Don Cameron, David Vern Reed, Dennis O'Neil, John Byrne, Tony Daniel, Scott Snyder, Paul Dini, Greg Rucka, Chuck Dixon, Joe Staton, Bob Kane, Jack Burnley, Dick Sprang, Sheldon Moldoff & Greg Capullo
Paul Dini, Tom Taylor, Peter J. Tomasi, Scott Snyder, Dennis O'Neil, Tony S. Daniel, Eduardo Medeiros, Greg Miller, Brian Azzarello, Gary Whitta, James Tynion IV, Riley Rossmo, José L. García López, Eduardo Risso, Lee Bermejo, Jock, Rafael Albuquerque, Ivan Reis, Simone Bianchi, Mikel Janin, Dan Mora, Fiona Staples & Stjepan Sejic
Mike W. Barr, John Broome, Don Cameron, Paul Dini, Chuck Dixon, Steve Englehart, Bill Finger, Neal Adams, Jim Aparo, Rick Burchett, Jack Burnley & Greg Capullo
