Colonel Strings commands military operations for the Earth Robotronics Corporation. He executes a violent raid on a clandestine Earth laboratory researching Third-type androids, massacring the facility's human researchers and android subjects. This attack triggers Naomi Armitage's investigation on Earth. Strings operates under direct orders from the corporation's vice president, Demetrio Mardini, functioning as a corporate enforcer within the hierarchy, not an independent agent. His military background shapes his methodology, though his specific service record is unknown. Following the laboratory assault, Strings confronts Armitage on Earth. During this encounter, agents acting for Mardini terminate Strings, confirming his status as an expendable asset once his operational purpose is fulfilled. Strings appears solely within the narrative of Dual-Matrix.