Original sentence: " Later he says that many characters were already present in those first episode, Itchy and Scratchy, Krusty the Clown and Abraham Simpson.A short clip from one of these early Simpsons shorts can be seen in the opening credits of the Futurama episode Fry and the Slurm Factory.After showing the cartoons Troy McClure is visibly perplexed by what he just saw, but he ironically says to the audience: "Haha, they haven't changed a bit, have they.In the Simpsons episode The Simpsons 138th Episode Spectacular three early Simpsons cartoons are shown.In the rest of the episode the crude nature of these cartoons are spoofed.The pictures shown of these characters are all very primitive, child-like doodles, parodying the very amateurish look of those early Simpsons cartoons