Mac Tonight was McDonald’s moon-faced advertising character used during the 1980s and 1990s.
The character had a crescent-moon head, dark sunglasses, and a formal outfit. Mac Tonight promoted McDonald’s evening business and was closely associated with a blues-style version of “Mack the Knife,” a song written by Kurt Weill and Bertolt Brecht and popularized in English by Bobby Darin.
Mac Tonight was not one of the original McDonaldland characters. He represented a separate advertising concept focused on nighttime dining, with a visual identity unlike Ronald McDonald, Grimace, or the Hamburglar.
The character is sometimes described as a permanent mascot, but he was primarily the centerpiece of a specific campaign. McDonald’s later reduced the character’s prominence, although the imagery remains a distinctive part of the company’s advertising history.