Officer Big Mac was the McDonald's character designed with a hamburger-shaped head and a police officer's role.
Officer Big Mac belonged to the McDonaldland advertising cast, a group of anthropomorphic characters created to give McDonald's commercials a shared fictional setting. His head referenced the Big Mac sandwich, one of the chain's best-known menu items.
The character's police role distinguished him from other figures in the campaign. Mayor McCheese served as the fictional civic leader, while the Hamburglar was associated with stealing hamburgers. These roles helped audiences tell the characters apart even when they appeared together.
Officer Big Mac is often confused with Mayor McCheese because both used burger imagery. The key distinction is that Officer Big Mac was the law-enforcement character, while Mayor McCheese had the mayoral title.