Fan Casting Batman: Who is the Arkham Knight

Red Hood and Arkham Knight are now the kings of gotham with the titans in SF and Batman working with the justice league. Batman comes out to alfred telling him he's figured out who red hood is and that not good. He tells him it's Jason todd after the joker killed him Arkham Knight found him and took him to an Lazarus Pit.
It Ends with Jason Todd turning on The Arkham Knight and helping Batman. Arkham Knight Is down and tells Batman You took my father so i'm going to take your son. ( Cut to Lex Luthor in a prison Cell). Batman says Your Luthor's Son? As a bomb goes off and when the smoke clears Arkham Knight is gone