While he'll always be known first and foremost as the prototypical heavy metal frontman of Judas Priest, Rob Halford spent much of the '90s away from the group (before returning in the early 21st century). During this time, the singer certainly didn't go silent, as he launched several projects – the Pantera-esque Fight, the Nine Inch Nails-esque Two, and ultimately, a return to his Priest roots, Halford…