Living in the city of Arcadia, the Empyreans are are mysterious and ancient race of super-powered immortals. Using camouflage devices to hide their city, they have remained unknown to most humans for years. Traditionally they have been enemies with the Lemurians, however the Lemurian King Arvad. is an Empyrean and has more recently been trying to undo the tensions between the two groups.
Empyreans resemble humans, and have at times secretly lived among them posing as wizards or gods in ancient times. They also have the benefit of being immortal, some have lived for millennia. Since they're lifespans are so incredibly long, they have had few children, although there have been a few accounts of crossbreeding between humans and Empyreans..