Those of you who stuck around in Arkham City after beating the story may have stumbled upon a bit of a surprise if you went back into the Sionis Steel Mill - specifically Joker's office; a pregnancy test labeled positive. It would seem that even the Joker in his dying state wanted to have leave a little legacy for the world. Things got a little confusing however, during the events of Harley Quinn's Revenge where players discovered several pregnancy tests, all of them labeled negative. As the trailer shows, Harley appears to be in perfect fighting condition. In the year that has passed between Arkham City and Arkham Knight, has she given birth or was it a miscarriage? If there is a little Joker running around, would Harley really be putting her life on the line out on the streets? Then again, this is a heartbroken Harley, so anything's possible. Regardless, we'll see what exactly happened to the baby.