Invisible Man: 9

At the brothel, a patient of the mental institution tells the protagonist to watch as he attacks Supercargo, then he says “Sometimes I get so afraid of him I feel that he’s inside my head.” This lends credence to the idea that Supercargo represents the Freudian concept of the superego. After this, the patients repeatedly knock Supercargo unconscious, then revive him “only to kick him unconscious again.”