Robert Cohn is the villain of The Sun Also Rises . Everyone in the book hates him. He is a bit sympathetic, but in the end, he is an unlikeable character. There are many things that make Cohn obnoxious. He acts childish, is obsessed with Brett, can’t take a hint, and just doesn’t fit in with the rest of the characters in the book. Cohn’s inability to take a joke or insult and his instinct to fight when faced with someone who doesn’t like him makes him childish. Cohn is also a hopeless romantic. He becomes obsessed with Brett, even though he is in a relationship with Frances when he first meets her, and he doesn’t realize he never had a chance with Brett. Jake tells Cohn right away that Brett doesn’t like him, and that she is engaged. Jake implies with his description of Brett that she doesn’t really stick to one man or relationship, so the possibility of Cohn and Brett ending up together is very slim. Still, Cohn acts as if he and Brett are already together when the group is in Spain. ...