Bob is a spirit of intellect bound to a human skull. He acts as Harry Dresden 's assistant and living encyclopedia of magic. He first appears in Storm Front. Bob has been assisting wizards since the Dark Ages; innately knowledgeable about the rules and status of the supernatural realm, he has therefore gathered extensive information and experience in applied magic, [3] which he does not forget, unless he intentionally chooses to do so.
In Ghost Story , Bob's self-representation is of an ordinary-looking young man, moderately tall, slender, with decent shoulders, dressed like James Dean [Footnote 1] in a biker jacket, with an embroidered skull over the heart, and a white shirt which appeared forced on him.
Bob has an ongoing "misunderstanding" with and a fear of Queen Mab , [7] who is likely wary about his knowledge of how to kill immortals, which poses a risk to her and the Winter Court. Under Harry Dresden , Bob is benign and helpful, if smart-mouthed. He is also a sexual pervert, generally insisting that Dresden buy him romance novels in exchange for his help. In Storm Front , Bob is given a hour pass; at the end of the book, Dresden "looked the other way" on a party that lasted for an entire day.
In Fool Moon , Dresden chides him for invading a party and inciting an orgy after having earned a day out, to which Bob replies by saying "I didn't do anything to anyone that a keg wouldn't have done". In Blood Rites , Bob is let out for the day to find Mavra 's hideout, but spends his time at strip clubs.
Dresden threatens to smash his skull, prompting Bob to go out for another attempt. Every time Molly Carpenter comes to Dresden's apartment , Bob relentlessly pesters him to let him talk to her.
