Answer
The main character in "Diary of a Wimpy Kid" is Greg Heffley. He is a 12-year-old boy who lives with his parents and his older brother, Rodrick. Greg is a bit of a loser, and he often gets into trouble. He is also very self-conscious and worries about what other people think of him. Despite his flaws, Greg is a likable character, and readers can relate to his struggles.