Giriko is a Demon Weapon and an ally to the witch Arachne. He lives for fighting and likes to be destructive. Giriko takes the form of a chain saw in weapon form. Although he is a weapon like Tsubaki or Soul he openly states his hatred for Shibusen claiming that he wants to follow his own path will rather than be used by a meister. Hence he fights solo using martial techniques while chains circle around his body. He also uses his chains as a form of transportation like caterpillar treads on a tank. Giriko is not very good at remembering faces as seen when he does not recognize Maka when she infiltrates into Arachnes castle with the other Shibusen students. He has formed a rivalry with death scythe Justin Law as they both are weapons who fight without meisters. Source: Wikipedia