Artist/WriterDan Davis, Scott Williams, Paul Mounts, Jimmy Palmiotti, Heroic Age, Val Staples, Joe Quinones, Paul Dini, Tanya Horie, Dave Johnson, Terry Dodson, Craig Rousseau, Bruce Timm, Yvel Guichet, John Timms, Scott Hanna, Rob Williams, Rachel Dodson, Brad Anderson, Guy Major, Jeph Loeb, Stéphane Roux, Rick Burchett, Adam Glass, James Patrick, Gary Frank, Alex Sinclair, Clayton Henry, Rick Taylor, Ty Templeton, Hi-Fi, Dan Slott, Chad Hardin, Ronnie Del Carmen, Ig Guara, Joe Chiodo, Jim Lee, Zylonol Studio, Amanda Conner, Aaron Sowd, Karl Kesel, Terry Beatty, Dan DeCarlo, Richard Horie, Judd Winick
Cover ArtistBruce Timm, Amanda Conner, Alex Sinclair
CharacterDeadshot (Floyd Lawton), Spider (villain), Suicide Squad (also as Task Force X, Mr. Falcone (villain), Di Happy (guest) (first appearance), Batman (Bruce Wayne), Yo-Yo), Two-Face, Madame Macabre, Harleen Quinzel, Pamela Isley, Joker, Robin (actor, cameo), Harley Quinn (Harleen Quinzel) (Villain), The Joker (hallucination), Limelight (Lime, Penguin (Oswald Cobblepot) (Villain), Barbara Gordon, Rodney, Wonder Woman (Diana Prince), Leslie Thompkins, Joey (villain), Martin (first appearance, guest, death), Batgirl (Harley), Jack Happi (guest) (first appearance), Amanda Waller, Ernie (villain, dies), Poison Ivy, Dr. Serrano (Flashback), James Gordon, Poison Ivy (Cameo), Robin, Batman (Bruce Wayne) (also in flashback), Dr. Jeremiah Arkham, Lewis LeBeau (guest) (first appearance), Poison Ivy (Pamela Isley) (Villain), Aaron Cash, King Shark, Joker (Flashback), Big Tony, Dr. Serrano, Savant (Brian Durlin)), Alfred Pennyworth, Joker (actor, cameo), Catwoman, Harley Quinn (Villain), Bernie (a beaver), Light), Captain Renee Montoya, Joker (guest), Harvey Bullock, Batgirl, Savant (Brian Durlin), Dr. Arkham, Catwoman (actor, cameo), Harley Quinn, Limelight (Lime (death), Buster (guest) (first appearnce), Thomas Elliot (Hush) (also in flashback), Joker (Villain), Suicide Squad (Colonel Rick Flag, Batman (actor, cameo), Batgirl (Barbara Gordon), Harley Quinn (Harleen Quinzel) (origin)
Series TitleHarley Quinn: a Celebration of 25 Years