Mac Tonight was McDonald’s 1980s advertising character associated with a moonlit jazz song.
McDonald’s introduced Mac Tonight in 1986 to promote evening dining and attract customers during dinner hours. The character was depicted with a large crescent-moon head, sunglasses, and a tuxedo, creating a deliberately surreal visual identity.
The campaign used a parody of Bobby Darin’s 1959 song “Mack the Knife,” with rewritten lyrics promoting McDonald’s at night. The advertisements presented the character performing the song in a jazz-inspired style.
Mac Tonight was especially prominent in the United States, but the campaign did not become a permanent global mascot like Ronald McDonald. Legal disputes involving Bobby Darin’s estate eventually contributed to the campaign’s withdrawal from U.S. advertising. The character is therefore remembered as a distinctive period in McDonald’s branding rather than a continuing mascot.