HuH?
Who is a liar but he who denies that Jesus is the Christ? He is antichrist who denies the Father and the Son. -- 1 John 2:21-23
... and every spirit that does not confess that Jesus Christ has come in the flesh is not of God. And this is the spirit of the Antichrist, which you have heard was coming, and is now already in the world. -- 1 John 4:3
For many deceivers have gone out into the world who do not confess Jesus Christ as coming in the flesh. This is a deceiver and an antichrist. -- 2 John 1:7
No Pope fits the bill.
Islam, which says that "Father" and "Son" are blasphemous, meets the qualification of 1 John 2:21-23 perfectly, however. Various Gnostic cults seem to fit the other two best.