Wandering merchants only appear in regular glades. They offer a chance to trade outside of the usual scheduled visits to the trading post. Each offers a unique assortment of goods and perks, but fewer goods overall compared to normal traders. They become available for trading when discovered, but only stay for a limited time.
Each trader appears to occur once per map. (Needs confirmation.)
There are three wandering merchants available: the Seer, the Hermit, and the Shaman.
The Hermit[]
Ruenhar Brightclaw: "Do not be afraid, stranger. This forest is only hostile to those looking to exploit it."
The Hermit rarely visits royal settlements, and actively avoids the Crown's officials. But he seems eager to trade with you.
Ruenhar appears to offer goods related to fox foods and simple resources.
The Seer[]
Alune Soulgazer: "The Blight might have taken my sight, but my journey is far from over. Take a look at what I've collected over the years."
A strange woman is observing the settlement from afar.
Alune appears to offer fuel, basic resources, and ways to manage Hostility.
The Shaman[]
Gex Runescale: "The Holy Flame bless you, Viceroy. May I offer you some of my wares?"
A mysterious and imposing figure has been spotted near the settlement. He is pulling a wagon full of herbs and ointments.
Gex appears to primarily offer goods related to alchemy.