Which McDonaldland character was portrayed as the mayor of the fantasy world?

Mayor McCheese was portrayed as the mayor of McDonaldland.

The character had a large cheeseburger for a head and wore formal mayoral clothing, including a sash. This exaggerated design made the character immediately recognizable in McDonald's fantasy-world advertising and connected the fictional government role directly to the company's food imagery.

Mayor McCheese appeared alongside Ronald McDonald and other McDonaldland figures in commercials, promotional material, and restaurant-related merchandise. The character was part of the broader strategy of giving McDonald's a recurring cast rather than using only product-focused advertisements.

Mayor McCheese is sometimes confused with Officer Big Mac, who had a law-enforcement role in the same fictional setting. Their titles and designs were different: Mayor McCheese represented the civic leader, while Officer Big Mac was associated with policing McDonaldland.