Which McDonald's character served as the chain's cheeseburger-headed mayor?

Mayor McCheese was McDonald's cheeseburger-headed mayor character.

Mayor McCheese was one of the central figures in McDonaldland, the fictional advertising setting used by McDonald's from the early 1970s. His design combined a human body in formal mayoral clothing with a large cheeseburger for a head.

The character is commonly mixed up with Officer Big Mac, another McDonaldland figure whose name refers to the Big Mac. The Hamburglar and Captain Crook were also residents of the same advertising world, but neither served as its cheeseburger-headed mayor.

Mayor McCheese represented the playful civic structure of McDonaldland. Characters with official-sounding roles helped make the advertising world feel like a complete fictional community rather than a collection of unrelated mascots.