Astel

"'Oh?~ It's rare for me to get visitors, ever... Well not that I don't enjoy it of course! Come on now, have a seat... Oh and please do not mind the chimpanzee, I swear he is well behaved.'"

The Desolate, Lonely Moon - The Eternal Learner
Astel Da'at, called by Tael Xeno Licht as Jenova as a codename, is what can only be described as the very concept of Unknown to a certain degree, living up in the very moon of each and every planet as a figure that represents that very concept matter. Astel Da'at is however, beyond enthralled by knowledge and figuring out every last piece of the world he lives in, even if he rarely descends from the Moon, his place of birth and living. His age is unclear, as he was birth together with the very idea of unknown and wanting to reach that very knowledge, but it is clear that Astel has since learned many many things, and he is very happy to not have reached the end of his learner's journey

Trivia

 * Jenova has been a concept for atleast a full on year, with atleast 20-30 scrapped concepts of what Jenova could be or what he was like, before landing on this concept which I (Tael), very much like.
 * Jenova's names are both references to two things which pretty much spell out some key parts of his character: Astel comes from the Elden Ring boss "Astal, Naturalborn of the Void", in which the Void in Elden Ring is space itself. The boss is a pathway for one of the game's ending, where The Moon reigns - And Da'at is the Sephirah of Knowledge in the Kabalah.
 * Jenova being a Conceptual Being hit so fucking hard at 3 in the morning on my head (Tael) that I just loved it every second I started thinking about it