Diary of a wimpy kid 2010
Adaptational Villainy: In the book version of The Long Haul, Greg worries Mr.Even Manny is noticeably less of an Annoying Younger Sibling and never reaches the Troubling Unchildlike Behavior territory.Susan doesn't force the others to do the things only she wants like she tends to do in the books and she is more understanding of Greg's problems.Frank in the films makes more of an effort to be a good father to his sons, and while still strict on them, he's actually less so than Susan is.Rodrick starts out pretty similar to his book counterpart, but he does go on to be a Cool Big Bro in the second and third movies.Because of this, Greg's rivals Patty and Chirag get the Adaptational Jerkass treatment in order to make Greg's actions more understandable. It helps that many of his larger Kick the Dog moments are removed and others are made more justified by the circumstances. The movies defy this, as while in the first film he is almost as much of a jerk as he is in the books, he gradually humbles out and by Rodrick Rules and Dog Days he is ultimately more sympathetic.
In the books, Greg is a huge Unsympathetic Comedy Protagonist.