Zrorne'odon'klosu, or 'Odon', as he's generally known, is the newly appointed commander of Citadel Station.
With the Chiss homeworld of Csilla removed far from the frontlines of the Galactic Civil War in the Unknown Regions, many Chiss chose to remain neutral and far away from the conflict.
Some, however, volunteered, such as Commander Odon. His knowledge of the Unknown Regions allows for many successful raids on Imperial targets and made him a prime candidate for the Citadel program after the war.