Doing A Drawing a Day December again. This is my first submission (Spoiler alert for Devilizard series up to the end of the last book). Abaddon's earthly body, after losing possession of it, becomes sentient, like Daichi. Its new inhabitant goes by they/them and acts stoically, as if they have flat affect. By the time they've gained sentience, the wish-granting rituals have been sealed away under Budsturga's shroud, meaning they have no record of their origin, other than Abaddon's transforming dagger (currently under the possession of Seglagg and Feng, but who knows?). They want to instead establish their own meaning from how they interact with others and how they feel now. They didn't want to think too long on a name, so they decided to point toward a random star in the sky and ask Medrash about it. He responded it was Deneb, a star in the constellation of Cygnus. They decided on Deneb Cygnus as a name deriving from that, and that they would give the words a new meaning from their own life.

They are a little socially awkward, but those who they open up to successfully trust them as a good friend.