Michael Schneider Variety Editor at Large SPOILER ALERT: Do not read ahead if you have not watched Season 10, Episode 3 of “The Masked Singer,” “NFL Night,” which aired Oct. 4 on Fox. “Vanderpump Rules” villain Tom Sandoval became perhaps the second-most hated person to be revealed in “The Masked Singer” history on Wednesday night. (The first, of course, will forever be American traitor and despicable human being Rudy Giuliani, who nearly destroyed “The Masked Singer” in Season 7.) Sandoval was unmasked as the Diver.