After along day of gameplay I have completed the storyline of Batman Arkham Knight. The truth of the Arkham Knights identity is Jason Todd. This Robin had gone insane after being tortured by the clown prince of crime. The Joker made Todd feel as though Bruce otherwise known as Batman left him there with Joker to die and replaced him with Tim Drake shortly after his disappearance. This caused the confused and insane crime fighter to put on the act of Arkham Knight to enact vengeance upon the Dark knight for having betrayed him and leaving him for death.
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