Mrs. Willey is Greg's history teacher. She keeps a space heater next to her desk during winter. In Diary of a Wimpy Kid: The Meltdown, a girl named Becky Cosgrove causes a riot by tipping over her desk and yelling. As punishment, she Mrs. Willey makes her sit in a chair next to her desk and the space heater. This causes other students start misbehaving in an attempt to get a seat near the space heater.