Antichrist is not a system. Look closer.
“And Jesus said to his disciples, one of you shall betray me. And one by one they said, is it I? And another said, Is it I?
Indeed it is I.
But now: I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me.
Anything we express in outward visible fashion toward others that isn’t the Christ nature…is the antichrist.
Genesis chapter one tells us the answer to the secret of 666.