Which McDonaldland character was portrayed as the police chief?

Officer Big Mac was the McDonaldland character portrayed as the police chief.

Officer Big Mac was designed as a personified Big Mac hamburger and appeared among the characters in McDonald's fictional advertising world. His police role was reflected in his name and uniform, giving the restaurant's signature sandwich a character-based presence in commercials and promotional material.

McDonaldland used anthropomorphic food items and playful figures to make McDonald's products memorable to children. Officer Big Mac belonged to the same broad cast as Mayor McCheese, Captain Crook, Grimace, and the Hamburglar, but each character had a distinct identity.

A frequent mix-up is confusing Officer Big Mac with Mayor McCheese, who was the setting's hamburger-headed mayor. Captain Crook was associated with Filet-O-Fish, while the Hamburglar was the burger-stealing trickster.