Cesar and Ugolín

Cesar and his nephew Ugolín are villains in the Simpsons episode The Crepes of Wrath.

They are french winemakers that live with their donkey Maurice in an old house next to the vineyard the work in. When Bart arrives in France after being sent there for three months in an exchange program upon playing a prank at school that wound up involving principal Skinner's mother, Ugolín picks him up at the airport and takes him to their place, where he and his uncle Cesar take Bart's belongings -giving his red hat to Maurice-, and then force him to work for them collecting grapes and making wine for the rest of his staying in France. They also fed him poorly and made him sleep on the ground.

After making Bart try some wine with anti-freezing and making sure he wasn't blinded by it, they sent him to the city to buy some more. While looking for the address, Bart meets a police officer and asks him for help, but unfortunately the cop doesn't understand english. As Bart walks away grumbling in frustration, he realizes he can speak french, so he goes back and tells the policeman about the methods of his exploiters, which are put in jail while he is exalted as a hero and enjoys a happy last month in France.

They are seen later on the series watching TV on an apartment.