Fake (Noun)

A person who makes deceitful pretenses.

Nouns denoting people.

The con artist was a fake who had swindled many people out of their life savings.
She was a fake, pretending to be a doctor to gain people's trust.
The fake smiled and charmed his way into the high-stakes business deal.
He was exposed as a fake after it was discovered he had no actual qualifications.
The fake posed as a celebrity to get into the exclusive nightclub.