Mary Lou Heffley

Aunt Mary Lou, is the great aunt of Greg, Rodrick and Manny and she only appears in the online version of Diary of a Wimpy Kid. She mistakens Greg for Rodrick, and Manny for Greg. She even said "Who are you?" to Rodrick on Christmas. She may have Alzheimer's.

Appearances

 * Diary of a Wimpy Kid Online (First and only appearance)

Trivia
She may be Tony Heffley's mother, and Uncle Bruce's son.