McDonald's short-lived moon-themed mascot used in 1980s advertising was Mac Tonight.
Mac Tonight appeared in a 1986 McDonald's advertising campaign aimed at promoting evening restaurant visits. The character had a moon-shaped head, wore sunglasses, and sang a version of “Mack the Knife.” His name combined “Mac,” a reference to McDonald's, with “tonight,” emphasizing the campaign's nighttime focus.
The advertisements gave McDonald's a distinctive musical and visual identity for dinner and late-evening occasions. Mac Tonight became especially associated with the campaign's stylized performances and moon imagery.
The character's use was later limited after a legal dispute involving the song's rights holder. Mac Tonight is therefore often remembered as a notable but temporary chapter in McDonald's branding, unlike Ronald McDonald and the Golden Arches, which became enduring brand symbols.