The Visitor is a mysterious traveler from the alternate reality where the Free Seas of Kay'va expanded throughout most of the continent. They once appeared to the Wrights of the Seventh Sun in Sapodilla, exchanging knowledge and a number of books in a strange language (including the Marrisa Lefebvre novels), before realizing that this group were weird fascists and not to be aided or trusted.
In "Six Travelers: Pickman", the Visitor provided Pickman with a passage back to Sangfielle from Zevunzolia.