Disney’s Floating Beast Illusion Will Blow Your Mind! Pepper's Ghost is a classic theatrical illusion that creates the appearance of a ghostly figure or object appearing and disappearing in space. It works using basic principles of optics - specifically, reflection and transparency. The setup involves a sheet of glass or clear plastic placed at a 45-degree angle between the audience and a hidden area (often called the "blue room"). When the hidden figure is illuminated and the main stage is kept