High Quality Content by WIKIPEDIA articles! Diary of a Wimpy Kid is a series of fiction books written by American author and cartoonist Jeff Kinney. The books are the journals of the main character, whose name is Greg Heffley. Befitting a child`s diary, they are filled with hand written notes and simple drawings of his daily adventures. The first three books of the series are based on a visual novel featured on FunBrain; the other books are thought to derive from the visual novel as well, but the series` website denies this. The series of books revolve around Greg`s life in middle school, his social interactions with friends and girls, and his life at home with his dysfunctional family.