"Not quite human," is often how Elythrin are defined. Though they can hide amongst humans more easily than other races, their faces and ears tend toward a more angular nature giving them a look that humans often find both entrancing and alien. The corners of their eyes follow the same path as their ears, with brows above that sit in a similarly pronounced fashion. Their noses are small and angular often being much less pronounced than their human counterparts which sit above an angular chin. Their teeth resemble a humans apart from a pair of cannines which protrude down beyond the rest. These are designed to perforate while simultaneously allowing liquid out of the hole they create. Due to their composition and a chemical process within the biomes contained in their saliva, Elytrhin can survive on a purely liquid diet without the negative effects that humans suffer. Their teeth, red eyes, and affinity for liquid consumption disturbed many humans believing them akin to the mythical Vampire creatures that ancient humans told tales of long ago. Both historical and scientific analysis seem to indicate that Elythrin hold a proclivity toward a sort of liquid cannibalism far more than other races. Further, they are capable of processing pure blood into a substantial amount of nutrients to the point it is possible for this to be the foundation of a healthy diet, should one choose. However both historical analysis and modern testing indicate Elythrin who do enjoy the taste of blood, preferred their own race's blood over that of any other. Regardless, their culture neither promotes or encourages any such action with those caught performing these practices are prosecuted to the fullest extent of the law.  

While humans hold a vast diversity of subraces, Elythrins only have a pair, Ivor and Azur Elythrin, which seem to be different only in appearance. Ivor having pale flesh, and their Azur counterparts holding hues of gray, purple, and blue. There has long been a rift between the pair, as until quite recently, Ivor held the power of the proletariat, and Azur the more numerous, plebeian class. Whether, Ivor or Azur, Elythrin tend to keep to themselves, preferring their own kin to most other races.

Reclusion has led to much of their technological prowess being surpassed, though as they are capable of surviving for thousands of years, their elders hold wisdom and knowledge which is only rivalled by Nautilans. Never aging in appearance past a point of mid-adulthood, Elythrin possess a slender physique that is accentuated by their long, pointed ears. It would be a mistake, however, to consider them weak or feeble, as the thin limbs of an Elythrin retain a youthful agility and strength.