)
He's also backed by Mara after the riften quest
You also owe your soul to hircine (double claim if a companion) and peryte. Optional would be Mehrunes Dagon, Vaermina and Boethia
This is why I love the dragonborn in particular. Not even in a lgbtqs orgy you get one guy fucking so many the way this guy did
The only sonbitch he owes nothing to are Sanguine and Cheesecord cuz those are just for the party