The plot does interest me, but since it'd take me another playthrough of Oblivion or Morrowind to be sure I have an accurate character from either of those games, I'm wondering if you'd be willing to do a crossover instead. The two characters for such I had in mind were [url=https://www.roleplayerguild.com/posts/5194734]Lucifer[/url] from Milton's Paradise Lost sans some minor changes, and [url=https://www.roleplayerguild.com/posts/5194736]Dracula[/url] from Castlevania Lords of Shadow. Again he's been changed slightly since I used him for another multiverse type roleplay and since most of his powers were just too broken to use.

My idea was that one of them ends up in Skyrim somehow, Lucifer makes more sense in this regard honestly, and encounters Ja'vassa, becoming wrapped up in whatever plots he might have.

EDIT: After giving it more thought, maybe I don't necessarily need to play one of the ES games again to make a character, rather just use wiki entries and such. My idea, going back to your original plot idea, would involve Morrowind, but not in the sense that it's the plot of the game itself. Rather I was thinking of a plot that could both explain how your Dragonborn ended up in the past while also providing him with a potential antagonistic force depending on how things go.