Dr. Royal Fitzhugh Sorghum is a local physician in Greenpoint. He's the family doctor for Farina's family, keeping him and Pineapple quarantined to home while the circus is in town. A title card remarks "Dr. Royal Fitzhugh Sorghum - a practicing physician. He's practicing on Farina and Gene." He also drives a small car that constantly backfires and wobbles, and opens with a house key that he hides under a doormat located on a step to the car door.
Dr. Sorghum was played by Ernie Morrison Sr..