Professor Garbanzo, or "Proffy", as she is called, is fascinated by the Float Factor. Whenever she has free time, her thoughts always seem to turn to experimenting with it, trying to improve its power. The story of Professor Garbanzo's origin is told in issue 20, Beanworld Zero, and issue 21, The First Time Professor Garbanzo Discovered the Four Realities. Her investigations into the Hoi-Polloi's method of turning Sprout-Butts into chow are chronicled in the backup story Proffy, the Snoopy Anthropologist in issues 3 and 5.