Contestants wear sweatshirts, gloves and visors to continue to hide their gender, race and identity backstage.
For Fox, it was important to find celebrities that people would know at home–at least once the masks are taken off.
In fact, only seven people on staff actually knew who the contestants were and even offstage, a level of secrecy permeates everything related to the show.
Craig Plestis says The Masked Singer actually keeps two bibles—one for formatting and one that was created just to make sure the level of secrecy remains high on the series. That hasn’t stopped anyone from guessing who might be behind the masks.