Boo

Boo (1999-2001) was a toddler in the movie Monsters Inc. She lived to two years old. She had black hair and wore her hair up in pigtails. Boo's mom and dad, Rob and Sue, are unseen and they believe that their daughter was kidnapped, which she eventually was after the events of the film and didn't survive. They were so upset about their daughter's murder, they moved neighborhoods and succumbed to depression a few months later. Boo's real name is Mary Gibbs and she was conceived on her parents' honeymoon. She had a strong attachment to her mom and Sulley. Boo's family also had a dog, but he died while her mom was pregnant with her. Her grandparents died before she was conceived. In the Alternate Universe, her parents broke up while they were dating, which prevented her conception from occurring. As a result of her not existing, the monsters still scared children and a lot of their lives were in danger because she was never born.