Jebediah is the most powerful and mysterious of the walkers. He appears to different characters wearing different coloured cloaks, and acts as the messenger or catlyst for the Avatars' powers.
His life and actions are strictly to serve the purposes of the ExoGen conference, where he is considered to be the most important man in the world. At the beginning of each 'semester' of the conference, there is a ritual held where Jebediah returns from his quests, and enters 'The Last Room'. Bets are placed on how long he will be inside, and a festival takes place, usually lasting many days. When Jebediah emerges, he is wearing a different coloured robe, and has a newly written scroll of edicts.