Generalities:

Oedipus complex. Disorder identified by the psychologist Sigmund Freud. The affection or libido of the male is fixed in the figure of the mother. Oedipus is the name of the Greek tragicomedy in which the banished son marries the mother (the Queen), kills his father (the King) and upon discovering it he takes his eyes off.

This pair also applies to people with problems of moral integrity, sociopaths, lack of moral.