Which advertising agency created McDonald’s fictional McDonaldland campaign?

Needham Harper Steers created McDonald’s fictional McDonaldland campaign. The advertising agency developed the fantasy setting and its characters for television advertising in the early 1970s.

McDonaldland turned McDonald’s branding into an interconnected story world. Characters such as Ronald McDonald, Mayor McCheese, the Hamburglar, Grimace, and Captain Crook gave the company a cast that could appear in recurring adventures and promotional material.

The campaign is often attributed vaguely to McDonald’s itself or confused with Leo Burnett, the agency associated with several major advertising campaigns. Needham Harper Steers was the agency credited with creating McDonaldland. The fictional world became one of the most extensive character-based branding efforts in fast-food advertising.