The idea of a "Mr. Antichrist world ruler dude" is not from the bible, but from tradition. The Bible's teaching on antichrist is very simple, and St. John lists the only passages anywhere in scripture on the matter. Everything the bible has to say about "antichrist" can be found as follows:
2 John 1:7
1 John 2:18-19
1 John 4:1-3
1 John 2:22-23
Thats it.
When we closely analyze St. John's comprehensive teaching on the matter we arrive at the following:
(1) Antichrist is one heresy of many adherents (2 Jn 1:7; 1 Jn 2:18)
(2) Antichrists were once members of the true apostolic Church, but left to embrace a very particular heresy (1 Jn 2:19; 1Jn 4:1)
(3) The heresy embraced by antichrists denies that the incarnation of Christ was one in real human form or flesh (2 Jn 1:7; 1Jn 4:2-3)
(4) The antichrist heretics proclaim one can have relations with Jehovah without needing Christ (1 Jn 2:22-23 - cf. Jn 15:23-24)
(5) The prophesied antichrists manifested in St. John's latter ministry years, proving to him that the final hour of the last days had come upon Him and his flocks (1 Jn 2:18-19).
There we have it. That's everything the bible teaches on antichrist. It is a solid, unified, and comprehensive teaching on the subject. The bible says nothing else on the matter.
Antichrist was a 1st century Church heresy of the proto-gnostic beliefs concerning the incarnation.
And of course, Revelation for sure says not a thing about "antichrist."
