Board Thread:General Discussion/@comment-8435644-20130627180223/@comment-24349111-20141002092408

It is confirmed. Sheogorath remembers things which only the HoK could remember. It also makes sense that the character in the TES games who could be called the most Padomaic player character in TES games yet would become Lorkhan's madness (which is Sheogorath).

You are right about the HoK stopping being "himself". He took over his mantle, essentially fillling Sheogorath which was once filled by Jyggalag. Only a few memories remain.

And there is absolutely no reference ever in lore that states that mantling is not a complete process. Every mortal can mantle every deity, provided that they know how to mantle.

Talos effectively mantled Lorkhan, taking his metaphysical position in the Mundus over and stabilizing it through that. In C0DA, he literally becomes Lorkhan (as in, Talos transforms into Lorkhan).