There's an Easter Egg in Suicide Squad: Kill the Justice League that around 10 people know of, and "if you're looking for it, you won't find it."
That's according to the Rocksteady senior producer just below, tweeting earlier this week when Suicide Squad: Kill the Justice League first entered its early access period. This means that the "10 people" who knew about the Easter Egg in the first place were probably on the game's development team.
