Not a masked band as such , but , I saw Blue Oyster Cult ,once , in 1979. During the inevitable Drum solo on "Godzilla" ,the strobe lights kick in , and suddenly , Alan Lanier is wearing a gigantic , regulation , licensed by Toho studios ,Godzilla mask ! Under the strobe , you'd see his own face return , then go back to the mask , as if by magic , while playing the drums. It was an effective illusion , to say the least.....Flash forward about 25 years later , and I'm seeing Brain Surgeons NYC , featuring Lanier and Ross The Boss (I was the only person there wearing a Dictators T-shirt. Everybody else wanted to talk about Manowar !). This was , of course , a small venue , so when THEY did "Godzilla " , Lanier simply grabbed the mask from behind his kit , put it on , did his solo , took the mask off again , and finished the song. No strobe lights , no suspension of disbelief. It was hilarious!