Mac Tonight appeared in McDonald’s 1980s commercials as a costumed singer with a crescent-moon head.
Mac Tonight was created for a campaign promoting McDonald’s during evening hours. The character’s visual design—a black-suited performer with a moon-shaped head and sunglasses—made him immediately different from the chain’s established McDonaldland characters.
The campaign is frequently remembered for its use of a rewritten version of “Mack the Knife,” but Mac Tonight was not the song’s original performer or a general-purpose McDonald’s mascot. He was a campaign-specific advertising figure. This distinction matters because McDonald’s branding history includes both long-running characters and short-lived promotional creations.