The Goat Man is a legend about a man who is half-goat that roams the area around the Mingo Woods. The story was first told to Greg by Rodrick. Greg and Rowley have argued about if the Goat Man is goat on the top and man on the bottom or vice versa. Rowley thinks it's split down the MIDDLE. Greg kind of agrees with him, but thinks Rowley's version is dumb. It also mentioned in Diary of an Awesome Friendly Kid: Rowley's Jefferson Journal when Rowley mentions about the Goat Man.
- The Goat-Man is an actual urban legend in real life.
- The urban legend originated in Maryland, U.S.A. It is unknown if Greg's town is set there.