The anti-Christ narrative comes from a book.

It just is.

There is good and evil in the world, whether or not we believe in any specific religion, in my opinion.

We are witnessing it every day.

Matthew 24:44

Therefore you also must be ready, for the Son of Man is coming at an hour you do not expect.

...then free will dies with it. Artificial Intelligence will create a new world.

15 “Watch out for false prophets. They come to you in sheep’s clothing, but inwardly they are ferocious wolves. 16 By their fruit you will recognize them. Do people pick grapes from thornbushes, or figs from thistles? 17 Likewise, every good tree bears good fruit, but a bad tree bears bad fruit. 18 A good tree cannot bear bad fruit, and a bad tree cannot bear good fruit. 19 Every tree that does not bear good fruit is cut down and thrown into the fire. 20 Thus, by their fruit you will recognize them.

That is the ultimate test, isn't it?

"Thus, by their fruit you will recognize them."

but in ourselves.

That is one.

Since I don't believe in supernatural entities of any kind, I don't believe in Saviors and "Anti-Saviors." I look for simple, natural explanations for things. The human brain is complex and can act to benefit self and others or act to harm self and others. That is pretty much all you need to explain almost everything having to do with humans and their societies.

Just my opinion, of course. You're welcome to believe whatever you can believe.

Some are very positive and some are very negative.

Some are almost totally negative. They are incapable of thinking in a positive way. Every thought is a negative reaction.

When the positive force is weak, then the negative force is strong.

I tend to believe that the positive force is the most natural for a good life.

They tend to be a positive force most of the time, but can be shifted to the negative side with some stimuli. It takes more for some, but far less for others.

And, as you say, there is a significant number of negative people who are on the bad side of things most of the time. Learning to recognize and avoid those people is a valuable life skill.

I can't see the need for a supernatural force in this. The positive people take the positive aspects of their deities and such. The negative ones choose the negative aspect of those, too.

It's too easy to ascribe behavioral tendencies to an invisible force. That's not needed, and will often lead as astray.

Or so I believe, anyhow.

At least, a significant number are usually persuadable.

First, we should define the term "supernatural"? I suppose we all have our own understanding of what that means?

In my opinion, the "anti-Christ" term was adapted from the Bible. But it would likely exist even if the Bible did not, because some things are "invisible" and we follow them through our heart and our feelings. That may be a more spiritual perspective, rather than a "religious" one?

Also, I think we tend to think of ourselves as an individual, one person, independent, and unlike anyone else in the world. We are unique. But are we? Or are we all part of one - a humanity with all the good and bad qualities that we encounter on our journey.

Does "being invisible" mean that it does not exist?

The orange yam and company are just the loudest and most known.