Originally Posted by
Anonymoose
I actually don't think they're any of those.
Despite deathgaze and the aevis family sharing DNA in XII, and especially despite Simurgh being called a Cloudkin in the FATE description, every last hint points to deathgaze being voidsent. They show up along other voidsent, they come out of voidgates, some of them have names with the word void in it - although that last one doesn't prove anything on its own since the Thaumaturge brothers prove that not-voidsent can be called voidsent if only the NPCs believe them to be so (aka the Deepvoid Deathmouse Effect).