Typically, when a show is created, there is a specific audience in mind. For My Little Pony: Friendship Is Magic, a very different fan base appeared. Grown men? They call themselves "Bronies" and embody a huge audience for the popular cartoon.
The show was intended for cross-generation appeal, so that parents could watch it with their kids. The show was successful in both of these targets, but also brought in an unexpected group: males 15-35, typically that are internet savvy. The term "brony" is used to describe them. Hasbro has fully embraced the fan base, selling t-shirts and things in more than just kids sizes. And the phenomenon has become so huge that there are massive amounts of fan art online, conventions (like BronyCon), and more. There's even been a Kickstarter funded documentary called: Bronies: The Extremely Unexpected Adult Fans of My Little Pony and a movie called A Brony Tale.
Lauren Faust, who developed and writes for the show, expressed appreciation for show's adult fans said, "The fact that they were open-minded and cool enough and secure in their masculinity enough to embrace it and love it and go online and talk about how much they love it—I'm kind of proud."