We had established Harley Quinn as an accomplice to the Joker who was also crushing on him and found herself in the middle of this weird relationship being at the beck and call of his every whim. We wanted to stretch her and make her a stronger character, so to have her leave him and go off on her own was a story I wanted to tell for a while.

Without Wonder Woman, there would be no Black Canary; without a Superman, there would be no Flash. They all come from that.

I looked at comics like a buffet table, where you take a little bit of something and leave the other stuff behind.

Paul Dini Quotes