Aerians (literally meaning life) are sentient bipedal humanoid creatures which evolved on planet Ixion in Eineal System, physically recognizable by their binary vascular system and six fingers on each hand. Their species can trace history of fifty thousand years after they evolved from simplier Rhaks and started to establish first organized societies. Major change to Aerians occured five thousand years ago (during Conflict of Ixion) due to virus engineering, making majority of Aerians infertile.