Two more items made up the whole set, the mask and the gauntlets. The mask was originally meant to be the last item that Quinn wished to create, but because of the situation with Alex, and how Alex was guiding him the whole way, it had become the second to last item he made.
Because there was no telling whether or not Alex would still be there after the gauntlets.
Which was why the second to last item Quinn had created was the mask. It covered half of his face, and was designed like that of Oni masks that were made long ago in the past. This gave a vicious outward appearance and suited his armour as well as his vampire self well.
The thing was, the crystal that had been used to create the mask, was an unknown. The crystal had been received by the Dark Magus. Someone that was powerful enough to even contain Mundus.