3. Aaron Cash
Always a reach in the first place, a particular fan theory purported that Cash had become disgruntled with Batman's antics over the years, and as a member of the GCPD who was also on duty the night of the first game's events takes it upon himself to get kitted out to take Bruce on head-first. The fact Cash is barely know to those outside of the most avid comic readers would cause his reveal to be one hell of a damp squib anyway, and that's besides the fact that in the newest trailer he's clearly shown standing with Jim Gordon and Renee Montoya as Scarecrow addresses the city. It wouldn't make a whole lot of sense for one of the GCPD's finest to be doubling as the newest masked terrorist in Gotham alongside sticking around voluntarily to clean the place up, so scratch this one off the list too.