Board Thread:Lore Discussion/@comment-108.253.68.177-20131021030335/@comment-9212235-20141107051834

Everything that happens from Knights of the Nine on up is in preperation for the mantling. The HoK mantles Pelinal, evidence that the HoK is a Shezarrine, containing a little piece of Lorkhan. Sheogorath is said to be a Sithis-Shaped-Hole. The mer think (and it is a popular and loved theory) that Lorkhan's mind was shoved into Jyggalag to make him mad. (Although, there is also this saying that it's not true). But, look at what happened when you shoved Lorkhan (Shor) into Auri-El. You get a schizophrenic Akatosh out of the mix. Pelinal himself was a bit cray cray, and mantling him, in my opinion, starts the HoK on the path of madness.

The HoK is given the ability to summon Haskill. If you do this over and over and over again, Haskill makes some remarks about how Sheogorath has "made quite the choice for his champion." The HoK gets Sheogorath's staff, his "symbol of office." When done, Jyggalag says, "You now hold the mantle (coincidence?) of madness." blah blah stuff. "This Realm is yours. Perhaps you will grow to your station. Fare thee well, Sheogorath, Prince of Madness." Jyggalag knows what happened. Then you go talk to Haskill where he calls you Sheogorath. Then a bit into the dialog he says, "As you have assumed the mantle (coincidence again?) of Sheogorath..."

Like I said, I can't imagine how one can interpret the ending of SI in any other way.

Skyrim has further evidence. Everyone probably knows of him talking about Oblivion's events. That's obvious, but Sheogorath has pure white pupiless eyes. This is different than the previous Sheogorath's eyes which had cat-like slits. This is evidence of an Enantiomorph that the HoK witnessed as the Observer that the original Sheogorath did not. King and Rebel could have been Sheogorath and Jyggalag and/or Akatosh and Dagon, or perhaps any number of other events.