The Brief Group C contestants on "The Masked Singer" performed hit songs, with Yorkie, Stud Muffin, Nessy, and Mad Scientist Monster battling it out. Stud Muffin was revealed as Grammy-winning rapper Method Man, who embraced the "Stud Muffin" costume choice. Stud Muffin is Method Man"The Masked Singer" unveiled Method Man, a Grammy-award-winning rapper and member of the hip-hop group the Wu-Tang Clan. Stud Muffin performs on "The Masked Singer." ‘The Masked Singer’ reveals ‘90s TV iconWatch the new episode of "The Masked Singer" on Wednesday, April 9 on FOX.