Who/what is the antichrist? Who/what is the false prophet? Who are the two beasts in Revelation chapter 13? What is the mark of the beast / 666?

Who is the antichrist? - https://www.gotquestions.org/antichrist.html

What is the Antichrist? - https://www.gotquestions.org/what-is-the-antichrist.html

Who is the false prophet of the end times? - https://www.gotquestions.org/false-prophet.html

What is the mark of the beast? - https://www.gotquestions.org/mark-beast.html