I dunno... the fact that he didn't care to conquer the world, and just ran off to mars to chill out on his own and do nothing but think, seems like a P thing.
And yet he himself said how pointless it all was since he knew the outcome of everything already and that he is a slave to fate.. In the comic he says he has no choice but to follow through with things because in one sense they have already happened.
SO if not him as an INTJ .. then who??.. I am as curious as the OP at this point