"The Illamans travel for years at a time locked in their rectangular spacecraft. But Illamans are surface dwellers, used to taking shelter in constructions."

The Illamans are a advanced space-faring empire encountered The Ellimist Chronicles. Their race formed the Illaman Confederation. They seem to have some relationship with the Ketrans and the Generationals, though the details are vague. Some were absorbed by the Father on his moon, who in turn was absorbed by the Ellimist.