 At some point he had gained the disfavor of Queen Mab, an event he constantly refers to when dragged into the Nevernever.Part of his personality and memory inherited from Kemmler (mostly dealing with necromancy) has been locked away to keep Bob benign.In "Ghost Story", Bob reveals that he "amputated" the portion of himself that contained memories from Kemmler, resulting in the creation of a blue skull shaped creature dubbed "Evil Bob".