Hoid (also known as Wanderer) is a mysterious man who appears in several Brandon Sanderson books. The only series he doesn't appear in is the Wheel Of Time series, as it was originally started by Robert Jordan. He has appeared as the King's Wit in The Stormlight archive, as an informant/beggar in the Mistborn trilogy, and as a storyteller in Warbreaker. He always seems to know more about the world than anyone else, and is the only character to appear in more than one series. He is not one of the Shards of Adonalsium, the gods present over every seperate continuity (bearing in mind that all but the Wheel of Time and Alcatraz are set in the same universe). Hoid does appear to have advanced knowledge of Adonalsium, and it is speculated that he was present at the shattering of Adonalsium into the sixteen Shards. He also exhibits the ability to travel between the worlds of the cosmere, appearing in every book by Brandon Sanderson, excluding the Alcatraz series and the Wheel of Time. Obviously, he also is not in Firstborn--a novella set in space.