cory michael smith, drew powell, crystal reed and alexander siddig don't appear in the episode as their respective characters, with smith and siddig receiving credit only, while powell and reed were uncredited. in september 2017, it was announced that the guest cast for the episode would include michael maize as grady harris,charlie tahan as jonathan crane, anthony carrigan as victor zsasz, damian young as warden reed and maggie geha as ivy pepper.