The Masked Singer has four permanent judges each season. Each week there is usually a guest judge that helps vote for the best performance. The singer that receives the least amount of votes from the judges is eliminated and their identity is then revealed. Ken Jeong, Jenny McCarthy Wahlberg, Nicole Scherzinger, and Robin Thicke have been the judges in Season 1, Season 2, Season 3, and Season 4.
Many episodes also feature a Guest Judge, that may be an actor, comedian, or musician. In the past seasons, there have been over a dozen Guest Judges such as Joel McHale, Gabriel Iglesias, or Jamie Foxx.