Who is Karl Richter from Up at the Villa and what is their importance? Up_at_the_Villa English & Literature Karl Richter | Up at the Villa

Karl Richter is a fiddle player and is entertaining at the restaurant where the princess hosts a party. He meets Mary by chance and returns with her to her villa where they make love. Karl is described as complicated, overly-romantic, and impoverished. He takes his own life after Mary tells him that they can never be together again.