The annual fan-favorite event, now in its fourth year, was first introduced to honor Batman's 75th anniversary. This year, in honor of Harley Quinn's 25th anniversary, BATMAN DAY will also feature the immensely popular Clown Princess of Crime who burst into our lives when she debuted on Batman: The Animated Series in 1992. “I Am Bane” part one! Bane is coming for Batman. Bruce must keep those he loves safe for five days in order to save Gotham Girl once and for all. But Bane will stop at nothing, and no one is safe.