If Batman can have a son, why not Joker and Harley? Sure they're not exactly a nuclear family (at least, as long as they don't get their hands on any warheads), but you know this household is still a jolly one.

No, it's not a new Batman storyline, it's a family of creative cosplayers that we spotted in the DC Comics booth today at San Diego Comic-Con. This couple has been cosplaying as Joker and Harley Quinn for over ten years now, and their fun tradition continues on into 2013...now including the newest member of their family!