Martin "Marty" Porter is a minor character that goes to Greg's school. He appears in the first book he ran against Greg Heffley to be school treasurer. It is mentioned that he had lice in the second grade and he is intelligent when it comes to math. While voting he handed out some lollipops. It is unknown if he won. Marty was played by Adom Osei in the film adaptation of Diary of a Wimpy Kid and was revealed he was one of the three trees replacing the Unidentified Tree Actor.
- Diary of a Wimpy Kid Online (First appearance)
- Diary of a Wimpy Kid (First book appearance)
- Diary of a Wimpy Kid (film)