The Ekrosian Guardians are a phenomenon in which large numbers of ships, machines, entities, or lifeforms spontaneously manifest in the intergalactic space surrounding the Sheol Galaxy. Each Ekrosian Guardian has a thirteen-pointed star symbol somewhere on their surface. The Guardians which are biological will all have identical genetic material despite having wildly different appearances and biologies. They are often hostile to foreign craft, with the largest among them making traversal of certain areas impossible. They vary in size from the scale of microbial life to the scale of megastructures, with a handful measuring at several light years in length. They will never venture into Sheol itself to the point that if forced, they usually die trying to leave. Among them, only a handful exhibit true sapience.
Their commonality makes entering the Sheol Galaxy fairly difficult, especially near regions known as "the galactic poles" on the "north" and "south" ends of the galaxy. These poles exactly correlate with the poles of Ekros, a major planet in the region.
It is unclear how these beings came to be. Based on several interviews, physical evidence, and documents, various researchers have concluded that they were created by an individual named "Eve." Every Guardian has the genetic material of Eve within them.
Ekrosian Guardians manifest between approximately 16,500 and 25,000 light years from the center of Sheol. In this region of space, there are, on average, over thirty thousand Ekrosian Guardians per cubic light-year. Recent estimates place the number of Ekrosian Guardians to be roughly 1.4 quintillion individuals. The manifestation of the Guardians seems to strictly obey the law of the conservation of mass and energy. Guardians manifest via the rearrangement of cosmic dust into the form they are to take. In other words, intergalactic dust and gas will spontaneously shape itself into one of these Guardians arround Sheol. Artificial Constructs do not seem to be affected.
After "death" the Guardians will demanifest. Upon demanifestation, they will decay into the cosmic dust and gas that once made them up. A small amount of the mass will be converted into gravity-waves and visible light. The largest demanifestations have been mistaken for events such as supernovae.
The most common of the Ekrosian Guardians exist on the level of single-celled organisms. They were only discovered to exist recently, as the detection of microscopic particles in the intergalactic medium is obviously a difficult task. Many of the Guardians at this scale seem to be protozoa-like organisms bearing the thirteen-pointed symbol. They are capable of expelling small amounts of gas to propel themselves, although to where is unknown. Most are capable of photosynthesis. Those which cannot often die within hours. They are not capable of reproduction.
Other small-scale guardians include microscopic machines or engines that aimlessly wander space, incredibly small-scale figurines of what is presumably Eve, tiny models of the last ship to pass through the area, and tiny luminous points with what seems to be only one dimension. These inanimate objects are classified as Ekrosian Guardians due to how they bear the same thirteen-pointed star.