The Espirions were a sentient species of humanoids that hailed from the planet of the same name. Although very similar to humans, they had red skin, a bald head and yellow eyes with green sclerae. Although the Espirions had massive military forces, they were hospitable to strangers, so much so that they created micro-ecologies on their homeworld in order to support very different lifeforms. Long before the Galactic Civil War, a number of Espirions interbred with Alderaanians, a race of humans from Alderaan, giving rise to a hybrid population known as the Alder-Espirions.