Seketherim

"...Harbingers of Astraphage come...The gods are dead here. The Sickle reaps and the Song is quiet."

-Remains of an epithet found on a pillar deep in uncharted Seketherim controlled space.

A race of horrors seeking the corruption of mortals, to twist and poison the minds of all free-thinking life. They spread a disease of the mind known as the Astraphage which slowly deteriorates one's morality until an entire civilization is sick with the invisible infection. After many generations and given the right conditions, a people subject to the Astraphage mutilate and alter their genetics to become Seketherim themselves.

Origins
Over time, Ahorham became jealous and hateful for sentient life because of their free-will and their ability to choose their fates. He sought to twist the notion of mortals into a mockery and thus created the Seketherim to corrupt the universe. Unleashed upon the Sickle, the constellation is forever lost to the Astraphage and has experienced cycle after cycle of life, corruption, and death by purges.

Appearance
The true form of a Seketherim is much like a skeleton, being extremely gaunt and appearing lifeless. What flesh they do possess is mutilated and festering with self-inflicted wounds. Their faces are warped portraits of their old selves, instilling nightmares upon all who look upon them.

Under most circumstances the Seketherim will disguise themselves as other beings by "growing" an outer skin with their advanced biological technology. In this disguise they will infiltrate societies and spread the Astraphage to leaders and other influential beings with their dark message. If revealed or discovered as a Seketherim they will burst from their fleshy disguises with ripping bones, spikes, and claws and then attack with bloodthirsty fervor.