The anti-Christ is not a single person. If that were so it could die and that would be that. It is a spirit that exists in many persons.
True, but there is coming one individual who will rule the world and he is called many titles - Son of Perdition, Boastful King, Man of Lawlessness, The First Beast, Rider on a White Horse...
He’ll eventually be the first one ever thrown into the Lake of Fire.
Both, maybe?