Rei Asterith, more commonly known by the alias of "Crimson," is the only being currently known to be able to absorb souls with no negative consequences. For this reason, he is not to be angered under any circumstances. To anger the Eternal King would be sealing the death of the entire universe at his hands. Great care should be taken during interactions, as he is highly volatile and capable of extreme destruction with little effort.
Despite existing before the birth of the omniverse, he is only known to have absorbed two souls in his existence, one of which being a fragment of a greater whole. The first belonged to [MALICE], with the second having an unknown identity. Any attempt to gather information on his past has been bluntly denied, and it has been clearly indicated that any further attempts shall be met with loss of contact.
He is believed to be the creator of all currently known deities, including being a precursor to [CHAOS]. All current threats to human existence are variants of him, and his elimination from all timelines is currently the most widely-researched scientific topic, with expectations of a Nobel Prize being given to the first person to create a weapon capable of killing him.
His appearance is incredibly inconsistent between viewers, with two people giving entirely different description despite being identical twins. This is considered to be a cognitive effect of his true form's incomprehensibility. What lies underneath the layer of appearance randomization is currently unknown to humanity.
His nature appears to be chaotic at best, with noteworthy attempts of cooperation followed shortly by wiping entire crews of men carelessly. He does not appear to value human life as a whole, however specific lives to seem to be valuable to him. He has been seen going to extreme lengths to protect other deities, even to the point of extincting entire multiverses.
Rei has been known to vanish suddenly from our reality on multiple occasions. While this most commonly results in an [APOCALYPSE EVENT], it can, on rare occasions, have no meaningful consequences. It's unknown where exactly he goes when he vanishes, but it's speculated to be some type of personal pocket dimension uninhabitable by humans without specific permission from him to enter.
He is currently known to be in possession of two CLASS-IV artifacts, both containing an unknown number of souls. Both take the form of finely-crafted blades of abyssal obsidian, with one having a handle made of silver, while the other's is made of gold. These artifacts are protected by highly powerful magic, with even thoughts of damaging them causing total organ failure along with similar effects to [LIQUID PAIN].
