1. IMDb: This is the go-to database for all things movie and TV. Search for "Diary of a Wimpy Kid" and you'll find listings for each film, including cast details.
2. Wikipedia: The "Diary of a Wimpy Kid" Wikipedia page will also have a list of cast members for each film.
3. Official Movie Websites: For the most up-to-date information, check the official website for each film. You can usually find a "Cast and Crew" section.
4. Movie Review Sites: Sites like Rotten Tomatoes or Metacritic often list the cast members in their reviews.
5. Search Engines: Use a search engine like Google and type in "Diary of a Wimpy Kid cast" to see a list of websites with cast information.
Important Note: The cast has changed for the animated films, so make sure you specify which film you're interested in when searching.
Let me know if you have any other questions about the "Diary of a Wimpy Kid" movies!