McDonald's is bringing Uncle O'Grimacey back to promote the Shamrock Shake. The chain has been reviving its McDonaldland characters after the success of its Grimace Birthday Meal.

Uncle O’Grimacey’s Shamrock Shake Comeback Enter Uncle O’Grimacey, Grimace’s Irish cousin who first appeared in 1977 as the official St. Patrick’s Day mascot for McDonald’s Shamrock Shake.

Grimace is the purple, fluffy, lovable guy that you more than likely recognize from McDonald's content or vintage ads, but he ...

Grimace is no stranger to the milkshake game, so it makes sense his uncle has the recipe. Grimace started his McDonald's career as a milkshake thief before seeing the err in his ways and became a ...

Grimace and his uncle were reunited thanks to the shake, according to McDonald's. According to a news release, Shamrock Season celebration came to life when Grimace stumbled upon his family’s ...

Like Grimace, Uncle O’Grimacey is an oblong-shaped, fluffy mascot. According to McDonald’s lore, the European relative lives in Sham Rock, Ireland, but visits McDonaldland for family reunions.

McDonald's is bringing Uncle O'Grimacey back to promote the Shamrock Shake. The chain has been reviving its McDonaldland characters after the success of its Grimace Birthday Meal.