Fan Casting Batman/Devilman: Speak of the Devil

Recent demon attacks in Gotham City lead Batman to track the source to Japan, where he meets an emotional young man named Akira Fudo who is transformed into the demonic vigilante Devilman by his childhood friend Ryo Asuka to fight the demon invasion. However, this makes Akira a target for Ra's al Ghul and the League of Assassins, who wish to use him and the demons to wipe out the human race and restore the Earth to its rightful owners. Now, Bruce Wayne is caught in a violent war for Akira's humanity and the fate of Earth, which will have disastrous consequences.