Fan CastingBatman And Owlman: Mystery of The Batwoman

Description of "The definition of Insanity" (Post-Credits Scene):

After the credits, we cut to a house in Gotham City, specifically, it's interior, where there is blood on the walls, as well as corpses, organs, and other objects on the ground. A young woman is hanging from the roof, her arms tied as tightly as possible to a rope, before a young man, who is her brother, steps out from the shadows. The girl shouts, "WHERE IS JEREMIAH!!???" in the face of the killer, who replies with, "Your true love's currently in the trash, poor Barbara Keen. He may or may not survive..." Before he picks a knife up off the ground, carves a smile into his own face with it, and then slits the young woman's throat, before he laughs uncontrollably.