Do I know who the Antichrist is? No. Since Satan does not know the day or the hour when Christ will call Christians home at the rapture, I believe he has on hand somebody prepared to rise to the challenge once its time for his rise and God permits the powerful delusion to take place.
What is the delusion, and why does Paul say that God is going to send the delusion? Christ does not say one word about a rapture. If you really want to know who the play actor, instead of Jesus is, you can find out. Christ said Take ye heed, I have foretold you all things. We are suppose to know in advance who it is so we are not deceived.