Gary Heffley

Uncle Gary is the uncle of Greg Heffley. Not much is known about him, apart from the fact that he was mentioned in book 3, where Greg had to go to his wedding, for a woman named Linda. In the Online Book, it is shown that he has been married three times, and his marriage failed. He is heavily featured in The Ugly Truth, as he is getting married for the fourth time to a woman named Sonja. But at there wedding Leonard stands up and says that when uncle gary and Sonja were watching a game while they were dating, a plane flew over that said: Marry Me Sonja? Sonja said yes but there must have been another Sonja in the crowd. Leonard says it was a big misunderstanding and Sonja gets angry.

Trivia

 * When Uncle Joe 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".