That's what I'm saying. Officially it's unknown if King Wulfharth was involved with the mantling of Talos. So likewise, we have to have the same setting right? A hero(depending who you ask) who may have been unfairly killed by the main entity of the three souls involved.

So now when we charge headlong against the Thalmor with Ulfric/Tullius at our side, and end up having to absorb them to become strong enough to wipe the elves out, we'll become Talos.

If I understand whatever I'm trying to talk about, which is up in the air, the events have to happen the same in order to mantle someone. So we need someone like King Wulfharth who may or may not have been involved.

Wulfharth was most definitely involved.

I get that, but it's not offical in universe, right?

AFAIK, playing through multiple times, the only Daedra you pledge your soul to is Nocturnal, NOT HM, NOT Molag Bal. I don't remember any other instance where you pledging your soul happens. So, no, I rather doubt being a Daedra's champion equates to them holding claim on your soul in that sense. If you choose where you go when you die as Dragonborn, you CHOSE to pledge it to Nocturnal.

A lot of Tamriel probably believes that Talos is just Tiber Septim but thankfully we, the PC can know better plus it's implied heavily throughout Skyrim with the Ghost of Old'Hroldan and depictions Talos in Skyrim looking a lot more like a Wulfharth than Tiber Septim's statue in Bruma. Or at least that's how I interpreted the statue.

But what we know isn't the important bit. For us to mantle Talos, we need everything to happen the same way. Walk as they do until they walk as you, right?
The Arcturian Heresy, while it may be true, is regarded by many people to be no more than heresy. So for us to mantle Talos, we need something similar to happen with us.

Of course, if the mantling has to happen all at once, then my theory is debunked. I don't see why it would have to happen like that though. As far as anyone can say, a part of Miraak escaped HM's clutches by joining with our own soul. Miraak cultists will write a Heresy about how the player character dragonborn unfairly cut down Miraak as he tried to flee from HM's realm, and how the real villain is the pc. It fits, at least in my mind.

I'm not sure what Tamriel's understanding of the Talos configuration has to do with the process of mantling him. We'll do it just like Tiber/Wulfarth and Arctus did. I may just be misinterpreting what you're saying.

It's interesting how we keep fighting the bad guys in threes, though. Last Dragonborn/Miraak/Hermaeus Mora, Last Dragonborn/Serana/Harkon, Last Dragonborn/Paarthurnax/Alduin, Last Dragonborn/Tulius/Ulfric

Being a Nord werewolf, nightingale, and now servant of Hermaeus Mora, does this mean Hercine, Nocturnal, and Hermaeus Mora will be vieing for my soul? Also, being a champion of Mehrunes Dagon with acquiring his Razor where would he fit in?

Don't you do it with Mehrunes Dagon upon acquiring the Razor?

Personally, I don't see the Dragonborn mantling Talos. There are many players who play as elves or beast races out there and even not as a Thalmor it would be incredibly weird to have a non-human become the God of Mankind. I feel that DB's ending was vague enough about our fate, or even leaning towards the freedom of our soul, because we are reminded after all the events with HM that we are free of his influence, so if we sell our souls to him it's our choice.

Also, what's going to happen to a werewolf nightingale?

Dragonborn isn't the end.

Based on how Kodlak's soul was cleansed of his werewolf curse/blessing, it seems like there could be hope to be free of Hircine's Hunting Grounds, but that still doesn't solve the issue of direct servitude to Nocturnal...

Of all things, "killing" a Daedra prince in its own realm is impossible. The closest thing to kill a prince is to banish its form in another realm, like the Akatosh avatar did with the Dagon avatar once he entered Tamriel. Jyglagg battle was the same: only an avatar was destroyed and it wasn't in its realm either.

Lets see, Hermaeus Mora's enemies are Vaermina & Ebonarm. It's interesting to note that Nocturnal seems to have no enemy among the daedric princes, except maybe Mehrunes Dagon whom invaded the Evergloam realm, the Shade Perilous. I can't help but wonder if Nocturnal would intervene on the Dovahkiin's behalf when it comes to his servitude (either willing or not) to Hermaeus Mora. That could be an interesting concept for a followup DLC to DG.

As far as being a Werewolf and Nightingale, there might be a type of joint servitude in Hircine's Hunting Grounds and in the Evergloam upon death. Of course, being cured of the curse/blessing is an easy solution while you are forever in service to Nocturnal upon becoming a Nightingale.

And there was no way around that, either. You could reluctantly join Herma, but you still joined him / became his "champion". I don't like being tied to the Daedra that way.

What Mora says isn't necessarily true. You only serve him if you want to, as statements by Frea and Neloth suggest. In many fantasy worlds Demons lie and trick heroes into their service. I believe we are free of Mora's influence so there will not need to be any follow up to resolve anything. After Miraak's death there isn't even much interaction with Mora any more, however there are interactions with Frea and Neloth which confirm your free will.

My current character serves him willingly though.

No, the deal was that you took Silus Vesuius's life in exchange for the Razor. Not your soul.

Thanks, yeah, I remember now that it as just the task.