Gallus Desidenius

Gallus Desidenius was an imperial thief and scholar. He was also the head of the Thieves Guild in Riften.

Gallus, along with Mercer Frey and Karliah, was also a member of the Nightingales. Sworn to protect the Shrine of Nocturnal, she blessed him with extraordinary skill. Gallus was in a romantic relationship with Karliah.

One night, Gallus was caught breaking into a laboratory owned by Enthir. Before he could call the guards, Gallus made a comment that intrigued Enthir. The two struck up a conversation, and eventually became dear friends.

Unfortunately, Gallus met his end after being lured to a remote location by Mercer Frey, who then murdered him. Mercer dumped his body into a nearby crypt, and blamed the killing on Karliah, who was forced to flee. However, Karliah is eventually able to reconnect with the Guild through the Dragonborn and after Mercer's betrayal. She rejoins the Guild and works with them to avenge Gallus.