The Antichrist has existed since 536 when Justinian I created the office thereof. As to the "10", I assume you are referring to the ten horns. The ten horns were the dynastic families that provided the kings of the Holy Roman Empire the Papacy crowned (in three cases excommunicated). Those 10 families continue to operate to this day, in some cases still the royalty of Europe. Though no longer controlled by the Papacy, they and the Papacy work together towards their agenda of global dominance (along with other elements, notably, the Rothschilds).