Stereotype- a Widley held oversimplified image or idea of a particular type of person or thing.

Countertype- an opposite or corresponding type.

An example of a stereotype in movies is that people from a foreign country are depicted as enemies and violent. For example a lot of action movies depict Russia as enemies.

An example of a countertype in a movie is captain Ripley in Alien. I think the directors do this to twist what the audience knows and change their prospective.