The little girl in the Pixar movie, Monsters, Inc. is named Boo. This shy and cute character is played by Mary Gibbs who was only five years old at the time of making the movie in 2001. The movie is about a business called Monsters Incorporated. The business collected kids’ screams to use as energy. Monsters Incorporated owned thousands of doors that led into kids’ rooms. The monster employees would go into these doors, scare the kids, and collect the screams. One day, the big blue monster named James P. Sullivan, or Sulley, came across Boo’s door and accidentally let her out. Sulley and his best friend, Mike, go on an adventure of a lifetime trying to get her back to her door, but get attached to her soon after meeting. Monsters, Inc. was so loved that Pixar created a prequel of the movie called Monsters University. Later, a series called Monsters at Work was created as a midquel of the movie.