What is another word for fake people?

There are many words you could use, depending on the nuance you want to convey. Here are some options, ranging from neutral to negative:

Neutral:

* Insincere

* Superficial

* Artificial

* Unnatural

* Pretentious

* Phony

Negative:

* Hypocrite

* Two-faced

* Deceptive

* Fraudulent

* Manipulative

* Shady

* Fake (this one is simple and direct)

The best word will depend on the specific context and the impression you want to make.