Many alright heard about this little easter egg, but for those that weren’t aware:

Within the Hall of Justice in Suicide Squad: Kill the Justice League, there is a tribute on the wall in memory of the original Harley Quinn – Arleen Sorkin. Also in the room, to the right of Arleen, is a tribute to Kevin Conroy – our beloved Batman. His final performance as the Bat was Suicide Squad: Kill the Justice League.

It seemed appropriate when I took the screenshot in my game to have Harley in her classic outfit.