Actress/cosplayer Diana Terranova dressed as Harley Quinn (right) with a cosplayer dressed as Batman at the Warner Bros and DC Comics Super Hero World Record event in Hollywood in 2018 The ...

but in "Batman: The Animated Series" and then jumped into the source material even though Harley's creators didn't design her ...

In fact, Harely Quinn saw the second major death of a Batman villain in just as many episodes, though this one came at the hands of Harley herself. Warning: Spoilers for the Season 2 premiere of ...