The King of Comedy (film) character fails to differentiate between his fantasies and reality in much the same way. Scorsese sought to achieve the same with the film so that, in his words, the "fantasy is more real than reality". Rupert Pupkin has been compared to Travis Bickle in "Taxi Driver": both characters have serious issues with reality testing, that is drawing the line between outer objective and inner subjective reality. In her review, entertainment columnist Marilyn Beck approved Johnny Carson's refusal to participate in "The King of Comedy", supposedly because he feared the film could inspire psychopaths like John Hinckley. Beck considered "The King
Robert De Niro to 128 pounds for the role in this film. Kazan adds that De Niro "is one of a select number of actors I've directed who work hard at their trade, and the only one who asked to rehearse on Sundays. Most of the others play tennis. Bobby and I would go over the scenes to be shot. Bobby is more meticulous... he's very imaginative. He's very precise. He figures everything out both inside and outside. He has good emotion. He's a character actor: everything he does he calculates. In a good way, but he calculates." Kazan developed and used those