Chuck Shurley
The writer of some books that tell the ongoing story of the Winchester Brothers before they happen. He is later revealed to be God.
Where is he from?
Chuck Shurley first appeared in the Supernatural fourth season episode "The Monster at the End of This Book" (which is a reference to a great Seseme Street kids book), Chuck would reapear occasionally through the series and would eventually be revealed to be Supernaturals take on God himself. He was played by Rob Benedict.