Board Thread:Metal Gear Solid V/@comment-25366375-20140923122450/@comment-68.207.141.23-20140923201557

If you ask me, I think (and hope, those would be amazingly fun boss fights. I enjoyed the Peace Walker fights.) that they will appear, but I'm not sure any of it would be canon.

However, it's not impossible for it to be canon. Metal Gear always mixes supernatural with reality, so I'd definitely buy that it is. Besides, it could open a very fun and engaging sub-plot.