The iconic fast-food mascot could sometimes be found greeting customers near the entrance to a McDonald's store. If you were lucky enough, a real-life version would make a muck at your birthday party.

The middle-aged Mr. D promoted Rax roast beef by complaining about his mid-life crisis and nursing a hangover.

Because of the social media trend, clowns went from a childhood entertainment to the stuff of nightmares. McDonald's ...