Maurlene

Maurlene is Grandpa's girlfriend and only appeared in the Diary of a Wimpy Kid Online version of Diary of a Wimpy Kid. She was replaced by Darlene in Hard Luck. She owns a pair of leopard-print underwear that she accidentally left at Greg's house, which briefly made Susan think that Frank was having an affair with another woman.

Trivia

 * She slightly resembles Isabella.