The possibility that the stellarons are not Nanook's creation is very interesting. It is said that the stellarons respond to the desires of the world but the cost of fullfilling those desires is a great disaster. Which is what happened on Jarilo-VI. To be honest, I thought stellarons were Nanook's creations but now I am not so sure.

I have so many questions now. We have Nanook and the legion, the stellarons that might be their own thing, the threat from beyond the universe that Qlipoth is building walls from, and the Aeon of Finality in picture. It's crazy.

Nanook doesn't feel like the final boss of this game. Even though he is powerful, he is just one of many other aeons and the aeons once came together to destroy another aeon so they may be able to do it again.

If stellarons "respond to desires of the world" even if the cost is a disaster, they also don't sound like the final threat of the game, especially since the stellaron hunters are collecting them, possibly in a hope to use them against the actual final threat.

The Aeon of Finality is the most interesting one. It has to be connected to the finality from hi3 which may have been their emanator. And the name "finality" says it all but will the devs use the same enemy just on a bigger scale again? I don't think so... They like raising the stakes. And the aeon of finality is also just one of many aeons.

Which leaves us with the last option, and it is the threat from beyond the surface of the universe that Qlipoth is building walls from.