McDonald’s 1980s advertising character with a crescent-moon head was called Mac Tonight.
Mac Tonight was introduced in 1986 to promote McDonald’s evening business. The character appeared as a singing, piano-playing figure with a crescent-moon head, sunglasses, and a tuxedo. His commercials used a rewritten version of the song “Mack the Knife,” changing the focus to nighttime dining.
The campaign became especially recognizable in the United States and helped give McDonald’s late-night branding a distinct identity. Mac Tonight is sometimes confused with Ronald McDonald because both were major McDonald’s advertising figures, but they served different campaign roles: Ronald represented the broader McDonaldland world, while Mac Tonight was built around evening restaurant visits.
The character’s name is also sometimes written incorrectly as “Mac at Night.” That phrase describes the campaign’s theme, but Mac Tonight is the established character name.