Does Greg heffley have a bother or sisters?

Greg Heffley, the main character in the "Diary of a Wimpy Kid" series by Jeff Kinney, has an older brother named Rodrick and a younger sister named Manny. Rodrick often annoys Greg, while Manny is spoiled and adds to the family dynamics. The interactions between Greg, Rodrick, and Manny contribute to the humor and challenges he faces throughout the series.