Bitzi's father

Bitzi's father is the father of Bitzi and Stu, deceased husband of Buster's grandmother, son of Bitzi's grandfather, father-in-law of Bo Baxter, and grandfather of Buster. He is mentioned in the episode Background Blues when Bitzi tells Buster that he worked as a Tollbooth operator. Buster also brings his grandfathers lunch box in for the class project and finds an old sandwich from 1955 in it.