Grimace was the name of McDonald's purple McDonaldland character introduced during the brand's 1970s character era.
The character first appeared as a large, somewhat mischievous figure connected with milkshakes. McDonald's later softened Grimace's personality and presented him as a friendly companion to Ronald McDonald and the other McDonaldland characters.
Grimace's design changed over time. Early versions had more elaborate features, while later versions used the simple purple shape that became familiar on packaging, toys, and restaurant promotions.
Grimace is often confused with the Hamburglar or Mayor McCheese because all three belonged to McDonaldland. Their roles differed: Grimace was the large purple friend, the Hamburglar pursued hamburgers, and Mayor McCheese was a mayor with a cheeseburger head.