I don't believe in super villians...but lets just say that this were to happen. And don't dodge the question with: "oh well that wouldn't happen to me because I am so utterly Christian". No I want a straight answer.
No way! God wants every baby carried to full-term and given birth, not murdered by heathen doctors. The Antichrist is not an unimportant part of God's divine plan and having an abortion would thwart that plan. That's why we don't have abortions at all - to ensure the Antichrist will be born and God's plan for the world fulfilled.
I don't believe in abortion and I would not abort the anti - Christ. It's his or her destiny to be born and take over the world. It means God is coming back soon and the sooner the better.
No. God wants us to spread the Gospel to all nations. So in my opinion (just an opinion) you should lead him to Jesus. But first, you have to pray and believe the Lord will send the Holy Spirit into his heart. And really, with strong faith, he will become a Christian.