When Zack Snyder says there’s a “Robin line,” I believe he signifies that Joker could have a line of dialogue that he says to Bruce Wayne’s Batman in Justice League that reminds him of the shared tragedy of their demented previous. When would possibly this occur? Well, there have been rumors that in a Knightmare sequence in Snyder’s Justice League, Batman (Affleck) can be preventing alongside Joker (Leto) and Deathstroke (Joe Manganiello) within the damaged model of a future the place Darkseid has destroyed our planet. If Snyder is definitely going to indicate us that weird crew up, I can see Leto’s Joker needling his “teammate” by reminding him of his biggest loss, his deepest failure. Such a Joker factor to do.