From questionable ingredients to controversial characters, McDonald's has its fair share of secrets it would like to keep.

McDonald’s began phasing out McDonaldland characters — Ronald McDonald, Grimace, the Hamburglar, Sundae, Officer Big Mac, Mayor McCheese, Captain Crook, the Professor, and Birdy the Early Bird ...

Read more: The Best Themed Restaurants To Put On Your Travel Bucket List Mayor McCheese hit the small screen in the early 1970s and was often seen with Big Mac, a policeman. Both characters were ...

McDonald’s began phasing out McDonaldland characters — Ronald McDonald, Grimace, the Hamburglar, Sundae, Officer Big Mac, Mayor McCheese, Captain Crook, the Professor, and Birdy the Early Bird — back ...

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