A composite of basalt, pewter, and shadow. His face is black-capped, adorned with pale freckles along his cheeks and nose bridge. Mud-brown eyes often look sunken in to his bearish face. The ragged hang of his coat gives the illusion of extra bulk as well as a lack of hygiene. His ears are close-cropped on the inner segments by the crown of his head, after being grabbed as a child. After a spar with Kallik, he has a vertical scar below one eye leading down his cheek. For all his height and obvious largess, he lacks considerable muscle tone and remains racy, rather than stalwart.

Glaukos Ostrega was born alongside a brother, to an absent father and brutish mother. Raised among the wolves of Ursus where he served as a punching bag to Avicus and Aventus. His caretaker was a silent, hateful creature; the next an absent-minded but devout follower of the daedra. The boy eventually replaced the resident medic and did his best to mind the storehouse, eager to prove himself, but then got lost while hunting for fresh supplies.

Before long he was found by a kind woman who turned out to be a witch, who then held him captive for misdeeds against her home, Moonglow. Following his punishment (a maiming; the taking of his left ear) Nuak, sometimes called Kiliutak, was banished from the village and left to fend for himself in the flatlands. There he was found by Nyra and agreed to go home with her — becoming Sivugat, her fang.

After training with her to become a warrior for her doomed war, the Saints were ousted from their home by warriors of Ursus and Akashingo and splintered to nothing. The boy fled the battlefield after a run-in with Germanicus, who later offered him a new contract.
After serving Germanicus and training beneath him, Glaukos was sent to Akashingo to serve as a mazoi there (a stipulation for advancement within Mereo), and upon his return to the barracks he was awarded the rank of Elitus. In the spring of 2023 he encountered a wild boar (Moccus) and fought with it, only to be severely wounded. Upon his return to the Wilds he finds Mereo has disbanded, which leaves him untethered for the first time in a long while.