Bob is a tour guide at the Mr. PiBB Factory, Stan and Francine's favorite soft drink in "A.T. The Abusive Terrestrial". Stan is so obsessed he sends Bob constant ideas for marketing Mr. PiBB which are routinely dismissed. While touring at the factory, Bob reveals that they plan on stopping production of Mr. PiBB. while Stan and Francine get fired up to try to save Mr. PiBB, Bob looks forward to his upcoming sex change.

Bob is voiced by Patton Oswalt.