"Joker War" also introduced Joker's new henchwoman, Punchline, and saw a rare team-up between the Bat-Family ... the wall in "Joker War," they'll love Batman's underdog position in "No Man's ...

Those theories were soon confirmed, as Lady Gaga was reported to be playing Harley Quinn, the Joker's love interest. In the comics, Harleen Quinzel is a psychiatrist the Joker falls in love with ...