Hercules and the King of Thessaly

Hercules and the King of Thessaly is an episode of Hercules:The Animated Series that first aired on September 8, 1998

Summary
When King Salmoneus impersonates Zeus, the king of the gods smites him for his gall. The good people of Thessaly, however, turn to Hercules for leadership and crown him as their new king instead. Hercules at first enjoys his new position; but when the people come to him with all their troubles, he has second thoughts, and tries to leave, only to be reminded by Zeus and Hera how proud they are of him. Hercules reluctantly stays, while Salmoneus schemes with Pain and Panic (who tried to take him to the Underworld living, which is prohibited) to get his throne back, in exchange for his silence about the mishap. In the end, Hercules forces the people of Thessaly to make their own decisions, and hence Thessaly becomes a democracy. Hades meanwhile discovers Pain and Panic's mistake and teaches them a lesson.