Well, it was strongly implied that batman and wonder woman wind up having sex after the two are exposed to Ivy's pheromones. (i personally feel Harly took superman for a spin) I grew up watching Batman the animated series up threw Justice, league, unlimited and I ship both batcat and Wonderbat.
So does anyone else want to see wonderbat with the kid happen if we get a season 3? being a big batman fan i feel he deserves to have a kid and be around for said kids full childhood.l