Well I dunno if he is an anti-christ. There never is a specification that there is a singular anti christ and they are often pluralized. There’s a pretty low bar to be an anti christ and they aren’t particularly a big deal. Basically according to script anybody who denies Jesus as being the son of God is an anti-christ and that’s pretty common. Any given day you’ll encounter a half dozen anti-christs. “The Antichrist” as in the one big one though isn’t super specified in character and there’s a bunch of options of not goodos who could fill the role

There is a separate nasty called the “the man of sin” and “son of perdition.” supposedly he will come at a time of a general apostasy, deceive people with signs and wonders, sit in the temple of God, and claim to be God himself. And a “Little Horn” (which I am not unconvinced just is a reference to a tiny dick) setting himself in the wing of a temple acting as though he is a divine authority and causing devistation of the Holy land… Which could fit?