Rob Halford comes out for Rapid Fire (which they did as the grand finale on the very last days of the black album tour)
King Diamond (though please play the Mercyful Fate songs in full, just this once).
and here's a darkhorse ensemble
Paul Di'anno for Remember Tommorrow and Prowler.
the fuck you know about French Montana you old son of a bitch!? Trying to fuck my niece to that throwback 90s slow-jam shit?