except for Gremlin, who the second contestant of the season to be eliminated and first-ever “Masked Singer” competitor to eliminate themselves, when he took off his mask on last night’s episode and revealed himself to be Mickey Rourke.So that’s who Gremlin is — but who are the identities of the five remaining masked celebrities in Season 4’s Group B? See below for fans’ best guesses, which were sparked by clue packages (you can view those here), the contestants’ initial performances, and the