It's almost trick-or-treating season and McDonald's has delicious news for everyone. McDonald's Halloween-themed Happy Meals are returning for the spooky season in four different styles this year. The iconic festive pails will be available in limited supply at McDonald's stores from October 17. Instead of regular paper packaging, these Happy Meal variants will be plastic buckets. There will be four colour options to choose from - orange, white, green, and purple, which is the latest addition to the series. Moreover, the four characters will be - monster, skeleton, mummy, and vampire.