From what we know about Post he was infected by Cable mutated T-O version, meaning he was somewhat Phalanx like but he never demostrated any of those qualities the hive-mind the ability to shape-shift or infect others with his virus. My deduction is that Cable's virus is totally mutated do to it long exposure to being in Apocalypse blood and somehow mas made what ever covered Post. Anyone got any other ideas?

@Leliel: That sounds like a pretty solid theory to ME! The best I could ever come up with was that Post needed Cable's help to survive and the only thing Cable could think of to do was give him a blood transfusion, and thanks to the transmode virus that still resided inside him Cable's blood had some interesting "Side-effects"...

@infonation said:

@Leliel: That sounds like a pretty solid theory to ME! The best I could ever come up with was that Post needed Cable's help to survive and the only thing Cable could think of to do was give him a blood transfusion, and thanks to the transmode virus that still resided inside him Cable's blood had some interesting "Side-effects"...

Maybe one day we will know the answer sense no one says dead and Post has been dead for few years now