A mysterious wandering man with a vast knowledge of the supernatural and is mystical in appearance. He carries around a large wooden box filled with medicine and holy tools. Among them is an enchanted sword that is used to slay the mononoke. To use the sword, the Medicine Seller must find the "Katachi" (shape), "Makoto" (truth), and "Kotowari" (reasoning) of the mononoke he wishes to exorcise. Once the sword has been unsheathed, he transforms into a demonic-like creature.