Bummer day today. For fans of the Arkham series, the wait just got longer. So I thought it would be fun to start a thread to speculate on just who the Arkham Knight is. Feel free to use the previous Rocksteady games to support your case or comics, but I do have a theory of my own that came to mind when a commentor thought the Arkham Knight was Batman in a new suit (I guess they did not see the announcement trailer?)
Remember after the events of Arkham City (the Joker and Talia died), Batman is mentally changed, he is angry, in distress, and much darker than usual. This is depicted in the events of the Harley Quinn's Revenge DLC. Combined with the fact that the premise of the newest entry is that the Scarecrow is / or will be pumping hallucinatory toxins into Gotham. This leads me to believe that there is a case for Batman to be the Arkham Knight (Batman is also referred to as the Dark Knight).
So what are your thoughts?
I would also point out in the above image, that everything, the drones, tanks, goons, etc, have his marking as well. Which means the Arkham Knight is extremely well funded.
This makes me believe that this character character could be Damian Wayne, the son of Batman and Talia Al Gul. Both Ra's Al Gul and Talia died in Arkham City. As mentioned in the Kotaku article, it is implied he has a personal vendetta (for the death of his mom / grandpa) against Batman and he has the money (League of Assassins). Also Azrael did suggest the events of Arkham City led to this event happening.
Secondly (correct me if I am wrong) Damian Wayne is currently dead in the comics, and this could be the way he comes back in the comics as well.