Bazil the Bizarre
Bazil is the resident wizard in the village, living in a single story round house that acts as both his home and his shop, where he sells potions and scrolls (and some spell components). His house is daubed with arcane looking symbols, as his his skin. He speaks using ventriloquism and his scarf made from a fox.
Drex tries to intimidate Bazil into sharing his spell book, and got banned from the shop for his efforts. The party purchased a super-cheap scroll of identity for 50gp, which only identified the auras on Morthos's sword.
Later, the PCs discovered that Bazil was a) mad and b) had three bodies in his basement. It seems he had had a vision which had unhinged him, and he had started scrawling nonsense symbols across his face, the walls of his house, and around a small altar in his basement - at which he sacrificed his victims. Drex, when looking at the symbols, recognised some of them as Abyssal, and the name of a demon - "Xancrown" - was repeated more than once.
Some of the other nonsense symbols matched some of the ones in the Goblin Book the Drex took off the cultists that they bumped into on the road.