Mors Odrion was a male Human serving as a diplomat within the Diplomatic Corps of the Alliance to Restore the Republic. During the time of the Galactic Civil War, he, in conjunction with the Mon Calamari named Rekara, investigated the planet of Sedri. On Sedri, he was taken prisoner by Karak, the Sedrian bishop of war.
During the Galactic Civil War, Mors Odrian and his retainer, Rekara who was a Mon Calamari, were in service to the Alliance to Restore the Republic. Their duties included recruiting individuals and ensuring the growing Rebellion had adequate supplies. In the course of this work, Odrion and Rekara began to hear reports about a new Imperial garrison that had been established on an unusual waterworld. After looking into the matter, Odrion resolved to become more directly involved in the conflict; he and Rekara journeyed to the planet of Sedri.
Despite warnings from the starship's navigation computer, Odrion and Rekara arrived at Sedri, discovering a world where the seas seemed to glow with a golden hue. Concealing their ship within a rocky inlet, Odrion and Rekara sought to find the source of the golden light. Before they could locate it, the light diminished, and they were captured by a group of Sedrians, the native sentient species of the planet.
Karak, the leader of the renegades, employed a piece of coral to extract information from Odrion's mind. This information included details about the Rebellion, the Empire, and Odrion's mission to Sedri. Odrion was held under constant surveillance while imprisoned. Rekara succeeded in escaping her confinement, but Karak intended to use Odrion as leverage in negotiations with the Empire. Karak offered to hand Odrion over to Imperial Commander Aban in exchange for Imperial aid in securing the sun caves and the Golden Sun once he had the power. During the attack on the city of Fitsay, Odrion was taken there by Karak. Ultimately, Karak was defeated by a team of Alliance agents dispatched to rescue Odrion. With the Imperial threat diminished and Karak in custody, Odrion chose to remain on Sedri as a representative of the Alliance.