The Holy Trinity consists of God the Father, the Son Jesus Christ, and the Holy Spirit. Their counterparts in the unholy trinity are Satan, the Antichrist, and the False Prophet.

Revelation 12 and 13 contain prophetic passages that describe some of the main events and the figures involved during the second half of the seven-year Tribulation period. Although many Bible passages allude to Satan in various forms, such as a serpent or an angel of light, he is described in Revelation 12:3 as a “great red dragon, having seven heads and ten horns, and seven crowns upon his heads.” The color red indicates his vicious and homicidal personality. The seven heads symbolize seven evil kingdoms that Satan has empowered and used throughout history to attempt to prevent God’s ultimate plan from coming to fruition. Five of the kingdoms have already come and gone—Egypt, Assyria, Babylon, Medo-Persia, and Greece.

All these kingdoms severely oppressed and persecuted the Hebrews, killing many of them. Satan’s intent was to prevent the birth of Christ (Revelation 12:4). The sixth kingdom, Rome, was still in existence during the writing of this prophecy. Under Roman rule, King Herod murdered Hebrew babies around the time of Christ’s birth and Pontius Pilate ultimately authorized the crucifixion of Jesus. The seventh kingdom, which is more fierce and cruel than the others, will be the final world kingdom that the Antichrist forms during the end times. These kingdoms were also prophesied in Daniel, chapters 2 and 7. The seven crowns represent universal rule, and ten horns represent complete world power or authority.

https://www.gotquestions.org/unholy-trinity.html