Senior Captain was a rank within the Chiss Ascendancy's Expansionary Defense Fleet, specifically a military rank. The position of Senior Captain held a higher place in the hierarchy than that of a commander. In an encounter, Mitth'raw'nuruodo presented himself to Anakin Skywalker, a Jedi General, as a commander; Che'ri, a sky-walker, believed this was to downplay his actual experience. In a later period, during the Imperial Era, the individual named Khresh also held the rank of Senior Captain.