Will the Antichrist know who he is? Does he have free will and just chooses to be indwelt by Satan?
Like everyone else the anti-Christ will have free will. I believe he will be one of the most totally deluded people ever. He will exalt himself above everything that is called God or is worshiped claiming to be God Himself (2 Thes. 2:4). But in presenting himself as the physical embodiment of God he will actually be possessed by Satan.
Almost everyone in the post Church world will worship him (Rev. 13:8). He will claim to be leading them on the path to Utopia when in fact he will be responsible for the destruction of society.