Spacefaring benefactors

The "spacefaring benefactors" were a mysterious species who helped the inabitants of seventeen water planets relocate to Iskalon when their worlds were hit by a series of disasters. Their identity remained a mystery at least until the Galactic Civil War, when the Shi'ido anthropologist Mammon Hoole led an expedition to the ruins of the seventeen species, in hopes of discovering the nature of the cataclysms and the identity of the benevolent spacers.