The Cobalt Knights (碧衣の騎士団) are administrators working for CC Corp in charge of debugging The World. The majority of them are equipped with a Divine Spear of Wotan, a weapon capable of deleting Vagrant AIs. As a result, they almost completely consist of Long Arms. They were known as the "Cerulean Knights" in the Legend of the Twilight anime dub. Spoiler warning: Plot and/or ending details follow.