Fake Greg Heffley

Fake Greg Heffley's real name is never revealed. Once Greg's Pre-Algebra class had a substitute teacher. He and his classmates switched seats to fool the substitute. But it backfired on Greg when the Fake Greg Heffley fooled around and when the real teacher got back, she gave Greg detention for two weeks.

Appearances

 * Diary of a Wimpy Kid: The Meltdown (First and only appearance)