Levi is a deadbeat employee of Enterprise Rent-A-Car that Stewie nominally supervises in "The Marrying Kind".
When a string of customers return cars that have been vomited in, Stewie finds himself stuck with the job when Levi is nowhere to be found for cleaning. Even worse, Stewie finds himself powerless when it comes to disciplining him for both his work ethic and habit of calling Stewie names.