Judge H. T. Stone appears in the Dinosaurs episode "Charlene's Flat World." Judge Stone sits in the Court of Governmental Retribution, and presides over Charlene's trial for heresy. The judge is anxious to leap ahead to sentencing, and has to be kept in line by his more staid Stenographer. He takes particularly gleeful pleasure in the phrase "Guilty!"
His name is a reference to Judge Harold T. "Harry" Stone on the television series Night Court.