McDonald's character Grimace was originally designed to represent a purple milkshake.
Grimace first appeared in McDonald's advertising in the early 1970s. Early versions of the character were more closely associated with stealing or collecting milkshakes, and the design had multiple arms. McDonald's later simplified Grimace into the large, friendly purple character widely recognized today.
The character became part of the broader McDonaldland cast alongside Ronald McDonald, the Hamburglar, Birdie, and Mayor McCheese. Because Grimace’s appearance is abstract, people sometimes identify him as a monster or another type of creature rather than a personification of a milkshake.
The character’s changing role illustrates how McDonald's branding adapted its advertising personalities over time. Grimace moved from a mischievous figure connected to milkshakes to a gentle, cheerful companion in later campaigns.