Rise of the Planar Trade Consortium
An odd, unspecified, creature, Master Plo is also a respected sage
Master Plo is a member of a race never before seen by any of the players. (He resembles most closely the “lizardy” creatures from the Dark Crystal movie who opposed the vulture-like Skeksis) Master Plo moves, and speaks, very slowly. He is quite old, and always walks with the aid of a cane. (a sword-cane, with a Radiant enchantment) Master Plo is quite knowledgable about the Library of Mirrors in Sum of All and is well-qualified to lead expeditions into it despite his age and physical senescence.
All the characters who have met him seem quite fond of Master Plo.