The Sword of the Gray Mist is the sword that Darkness General Shasstar uses. The resource that it was made from is literally, 'gray mist'. When Vector kills Shasstar's wife, he gets angry and accidentally activates the Armament Full Control Art. When it is activated, the blade turns into a maelstorm of gray mist. The mist tears 2 of the Seven Servants apart and claims the leg of the leader Dark Witch. When he starts to attack Vector, it changes form into the upper body of a giant and he lashes out with his fist, only to simply go through Vector.