There are two distinct sapient species inhabiting the planet of Abyormen, both of which are commonly called Abyormenites. Abyormen is a planet with a highly unusual orbit around a binary star system. Basically: it orbits the red dwarf star Theer, which in turns orbits a blue giant known as Alcyone, or Arren as the natives call it. This creates a unique seasonal cycle consisting of two alternating periods: a "hot" season and a "cold" season, each lasting for approximately 65 Earth years (830 local years). The two races peacefully alternate inhabiting the planet, one being active during the cold times, and the other during the hot times.