Glaukos was a former slave and, during the events of Kushiel's Chosen, a sailor and pirate with Kazan Atrabiades. His mother was from Hellas and a slave in Tiberium, where he was born. After being sold a few times, he found himself on a trade matter aboard a merchant ship to La Serenissima with his master when the ship was attacked by Kazan. Kazan gave him the choice of fighting for his master and dying or joining the pirates. At sea, he acts as a physician to Kazan's crew and Phedre when she is rescued by Kazan after escaping from La Dolorosa. He is also Kazan's bookkeeper.
When not at sea, Glaukos lives on the island of Dobrek with his younger wife Zilje and her sister Krista.