WARNING! THIS ARTICLE CONTAINS MAJOR SPOILERS ABOUT THE MASKED SINGER SEASON 13!The Masked Singer season 13’s Mad Scientist Monster was one of the 15 contestants competing for the Golden Mask trophy, and he placed fourth and was revealed to be country singer Brian Kelley. The Masked Singer season 13 featured the return of host Nick Cannon, along with panelists Robin Thicke, Jenny McCarthy-Wahlberg, Ken Jeong, and Rita Ora. During the finale, Gretchen Wilson (Pearl) took home the Golden Mask Trophy, while Andy Grammer (Boogie Woogie) placed second, Meg Donnelly (Coral) placed third, and Brian placed fourth.