In that particular narrative, The Joker has his face removed by The Dollmaker, and he goes around wearing the rotting flesh as a mask over the exposed muscle of his face.
Early glimpses at his upcoming story arc seem to indicate that Jerome has had his face removed, which leads us to believe that Gotham is about to adapt the version of The Joker from Scott Snyder’s Death of the Family story arc.
It’s gross, it’s disturbing, and it has already become one of the most iconic versions of The Joker.
The return of Jerome is a welcome prospect for fans of the Batman mythos, and evidence of his arrival promises nothing less than a bloody Season 3 debut.