Gary Heffley

Wives

 * Linda (Divorced)


 * Charlene(Divorced) / Cindy (Online version) (Divorced)


 * Lydia (Divorced)


 * Sonja/Linda (Online) (Divorced)
 * Sonja (Possibly Divorced)

Trivia

 * When Joe Heffley and Frank Heffley tell Greg he needs to start thinking about his future, he comments himself as more of an "Uncle Gary kind of guy".
 * He and Sonja must have divorced because Sonja angrily reacted after knowing that their marriage was a misunderstanding and that Gary was actually planning on dumping her for her sister, as she doesn't appear at all in The Third Wheel.
 * He doesn't appear nor is mentioned in any of the films. Not even in a flashback.
 * Greg refers to him as a "dummy" in Double Down.
 * In the original online version of Diary of a Wimpy Kid, it seemed that Gary was actually Mrs. Heffley's brother, rather her brother-in-law.
 * Wimpy Wonderland misspells his name as "Uncle Gray."

Appearances

 * Diary of a Wimpy Kid Online (First appearance)
 * Diary of a Wimpy Kid: The Last Straw (Cameo, appeared only on a T-shirt)
 * Diary of a Wimpy Kid: The Ugly Truth
 * Diary of a Wimpy Kid: Cabin Fever (Mentioned)
 * Diary of a Wimpy Kid: The Third Wheel
 * Diary of a Wimpy Kid: Double Down
 * Wimpy Wonderland (in a photo)