at the ending the game , someone was interviewing someone ( presumably Alcatraz). and the guy replied my name is Prophet
but that isn't possible !!
He shot himself in the head!
Unless Prophet's brain has been imprinted into the suits AI processor, and after Alcatraz has entered the central spear, that triggered the reaction.
And morphed Alcatraz into Prophet
or its just a movie sequence to make things more drammatic