What are some stereotypes?

Consider: bloodthirsty savage vs. noble savage

In psychology, there is a type of defence mechanism called identification and introjection

Identification:  a psychological process whereby the subject assimilates an aspect, property, or attribute of the other and is transformed, wholly or partially, by the model the other provides

Introjection: the process where the subject replicates in itself behaviors, attributes or other fragments of the surrounding world, especially of other