For the people who have finished Ground Zeroes, and maybe some other MG games, keep reading, if you haven't, exit the thread.
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Ok so, this is the official thread to speculate on MGSV:PP. Any theories you have? Anything you're expecting, what will Kojima do this time?
Personally, i've heard of many theories, i've heard the:
Gray Fox = Big Boss theory (Body double theory)
Ishmael = Solidus or Medic
Chico = Quiet
Here you can discuss such theories, or propose your own. Have fun!