Number 128 starts the battle with Net, which inflicts Stop on a party member, and it uses it randomly throughout the rest of the battle. It counters physical attacks with Blood Feast, a physical attack that acts like the Drain spell, restoring some of its HP. If its Right and Left Blades are destroyed, Number 128 will use Gale Cut, a Wind-elemental attack that hits the entire party. If either blade is killed it will regenerate, so it is best to ignore them and focus on Number 128.