they have some power...but they're not as sneaky as you'd think....maybe....lol maybe they are idk..
no but it is safe to say they are liars because they are simply human.
It's called "acting" so you can tell the difference from the idea of "deception"-if they weren't able to make you see them as someone else they wouldn't be very good actors. Being a con artist is deception and totally not acting in the traditional sense.
I don't know any famous actors.
..i bet a lot of them have used their acting abilities to cover stuff up