The Nebbia Numero Due is a dark gray full-body armor, designed after a medieval knight's armor, with a pair of white horns at the helmet. The kanji for phantom (幻, maboroshi?) is on the left chest.
It seems to be constantly surrounded by concentrated Mist Flames.
The Nebbia Numero Due's technical specifications include solidness for use in close-combat, but is also light-weight and easy to move around.