Stan Johnson is a Certified Public Accountant to whom Crow T. Robot accidentally sold his soul after mistaking him for Satan, while trying to gain unfathomable worldly power. Mike discovered this after finding a typo on Crow's scroll of paper and placed a call to clear things up. Sadly, it turned out Crow's soul had already been sold on by Stan.
Stan was unseen (only heard over the phone) after Mike and the Bots finished watching Experiment 908 The Touch of Satan.