Who was the first Incan emperor?

I was.

The Great Emperor Aszgafarassonighul. My crown is made of Gold, and so is my palace, and my jewels.

Unlucky for me, I was caught while I was escaping the South America when I wanted to explore the other worlds. My deeds were considered as unpatriotic, and therefore I committed treason.

I was mummified within insects, and now, after 4000 years I came back alive, and became an inhabitant of the new, much nicer world.

End of sarcasm.

Nobody knows anything about early Incan days.