Neither the Book of the Revelation nor the other prophetic books mention "the antichrist." "The Antichrist" seems to be a construct based upon four verses in John's epistles. "Who is the antichrist, but he who denies the Father and the Son." This means anyone who denies God the Father and God the Son is the antichrist. That can be anyone.
However the Book of the Revelation, Daniel, and the Apostle Paul do speak of a "Man of Sin," who is given other descriptions, such as "the Beast," "The Little Horn," etc., who aspires to become world emperor during the 7-year period preceding the triumphal return of Our Lord. Popular eschatologists like Hal Lindsey, Chuck Missler, etc. label this individual "The Antichrist." But such a label is not used in scripture for this individual.
Why am I splitting hairs? Because according to the Apostle John, there are MANY antichrists, not just one. Looking for the one in the future tends to give people a false sense of security, having fed their curiosity, but not giving cause for personal vigilance or piety. But knowing that there are MANY antichrists, serves as a warning to protect your heart, mind and emotions from those who would deceive, if possible, even the elect.
I think, like the word "rapture", which cannot be found in Scripture but is simply a word used to describe an event which will happen, "Antichrist" cannot be found in Scripture but is basically an all-purpose word to describe a world dictator who is yet to arise.
The fact that "rapture" is not explicitly in the Bible does not mean that there will not be a moment in time when Christ removes His church from the scene before He judges the world, and the fact that "Antichrist" is not used explicitly by God to describe the "man of sin" carries no particular meaning- the world will still be under the satanic rule of the "Antichrist" for seven years- no matter what label someone gives him.