Walking Chrysopolis

The Aggelos (plural: Aggeloi) refers to any hostile and animated entity comprising natural matter and a halo structure, and is created by an Ankhor via catalytic construction. Throughout the history of humanity's expansion across Talos-II, the Aggeloi have always been our primary threat. The Aggeloi War was named after the enemy fought by humanity.

There are 4 currently verified modes of Aggeloid behavior: (1) construction; (2) deconstruction; (3) mimicry; and (4) attacking humans / human-built objects. However, since the Ankhor-induced Aggeloi formation process resembles that of industrial production, we are uncertain if the Aggeloi can be classified as a living or biological lifeform.

The construct pattern of an Aggeloid entity refers to its outward appearance, mode of movement, and means of attack. A single Ankhor tends to create Aggeloi with only a limited number of construct patterns, though they may include occasional non- or alter-pattern variants. Hence, an Ankhor's property is defined by the range of Aggeloid construct patterns it can create.

Since the First Aggeloi War, humanity has encountered new construct patterns of Aggeloi, giving rise to the Standard Aggeloid Classification (SAC) system. SAC is designed to help users search and identify weaknesses and best tactics for neutralizing a particular Aggelos.

Currently, most Aggeloid threats come in the form of raids stemming from unknown sources or random Ankhorfalls. Nevertheless, humanity's history records described how the entirety of the Northern Frontier was destroyed within 24 hours after the First Aggeloi War broke out.

The Aggelos is likely to remain as the greatest challenge faced by human civilization on Talos-II.