In the book, David repeatedly describes himself as pudgy and out of shape, while in the film he has a healthy build.

Robert North in the book becomes Ro ger North in the film, presumably to keep viewers from confusing him with Robert Marley.

Also, John's last name is explicitly given as 'John Cheese,' while in the books his surname is All There in the Manual.

Word of God states that this is because the best dog for the part was male. Adaptation Name Change: Molly the dog is changed to Bark Lee the dog in the film.Most likely a consequence of being fused with Jennifer Lopez. Adaptation Dye-Job: Amy is repeatedly described as a redhead in the books, while she's a brunette in the film.In fact, the film is really an adaptation of the beginning and end of the book, leaving out most of the middle altogether. A few characters and the trip to Las Vegas, as well as the cloning sub-plot, are removed. Likewise, The Stinger about John and Dave walking away from becoming another dimension's saviors, the appearance of the wig monsters, and what Marconi is are changed. Adaptation Distillation: How Dave gets the soy sauce forced onto him, and how he's found by 'Morgan Freeman', are both shortened and changed.It stars Chase Williamson and Rob Mayes, with supporting performances by Paul Giamatti (who is also an Executive Producer), Doug Jones, and Clancy Brown. It was written for the screen and directed by Don Coscarelli, whom you might know from The Beastmaster, Phantasm and Bubba Ho Tep. John Dies at the End is the film adaptation of the book of the same name. I once saw a man's kidney grow tentacles, tear itself out of a ragged hole in his back, and go slapping across my kitchen floor.

John dies at the end book series