|White Knight Chronicles II » Equipment » Arm Gear » Doom Gauntlets|
Additional notes (thanks to MySTe12Y):
The Doom set can be found in New Game +. I recently found the entire set in Dogma Rift. The Arm guards are the first to be found - they were outside, way before reaching the Temple. The rest of the equipment is inside the Temple. Before taking any elevators, search the area because all the pieces are there waiting.