The word "antichrist" appears only four times in the Bible.
There are many christs recognized by many religions as a savior. Some of them were real men, and some are mythical legend, but only one of them represented the True God Jehovah, and that was Jesus of Nazareth, the one who became the Christ by freely giving his life a ransom for all at "Golgotha, which is called, Place of a Skull" ~ Matthew 27,33.
"Who is the liar, except the one denying, saying that Jesus is not the Christ? This is the antichrist, the one denying the Father and the Son. Everyone denying the Son does not have the Father. The one confessing the Son also has the Father." ~ 1 John 2:22-23
"Beloved, do not believe every spirit, but test the spirits, whether they are from God; for many false prophets have gone forth into the world. By this know the Spirit of God: every spirit which confesses that Jesus Christ has come in the flesh is from God. And every spirit which does not confess that Jesus Christ has come in the flesh is not from God; and this is the antichrist which you heard is coming, and now is already in the world. Little children, you are of God and have overcome them, because He in you is greater than he in the world. They are of the world; because of this they speak of the world, and the world hears them. We are of God; the one knowing God hears us. Whoever is not of God does not hear us. From this we know the spirit of truth and the spirit of error." ~ 1 John 4:1-6
"For many deceivers have gone out into the world, those who do not acknowledge Jesus Christ as coming in the flesh. This is the deceiver and the antichrist." ~ 2 John 1:7
Clearly, antichrist is not a man. There are "many antichrists", yet it is not a particular group of men. The antichrist is a spirit that influences the actions of many people, and they were already in evidence in the early church. However, if you have been reading my articles, you know that Satan is a great counterfeiter as well as a liar, and he is not going to deceive the world, rather he has already well done it. Luciferians, Satanists, occultist' of all strips, atheists, agnostics, gnostics, New Ager's and many others including main line religions are possessed by the spirit of antichrist demons. They are Satan's children and thus unknown to the True God whose name in modern English is Jehovah.
(Je·ho'vah) [the causative form, the imperfect state, of the Heb. verb ha·wah' (become); meaning "He Causes to Become"]