Officer Big Mac was the McDonald's mascot with a head shaped like a Big Mac and a law-enforcement role in McDonaldland.
The character was part of the fictional McDonaldland cast developed for McDonald's family advertising. His police-officer identity gave the advertising world an authority figure while his food-shaped head tied him directly to one of the chain's signature products.
Officer Big Mac appeared alongside characters such as Ronald McDonald, Mayor McCheese, and the Hamburglar. These figures created a shared setting in which McDonald's menu items and restaurant themes could be represented through fantasy characters.
He is often confused with Mayor McCheese because both held official-sounding positions and appeared in the same fictional community. Their roles and head designs distinguish them: Officer Big Mac was the law-enforcement character, while Mayor McCheese had a cheeseburger head and served as mayor.