Daring Do is a character from My Little Pony: Friendship is Magic. She is the titular character of the Daring Do book series. She is featured in four episodes, having major roles in Read It and Weep and Daring Don't, and very brief appearances in A Friend in Deed and Too Many Pinkie Pies. In the books, she is an adventurer who goes after ancient artifacts while fighting the villains Ahuitzotl and Dr. Cabelleron.
Daring Do is a adventurer in the MLP: Friendship is Magic series who is the titular character of a book series in the show. In season 4 it is revealed Daring Do is a real pony and writes her own books based on her adventures.
Daring Do was initially believed to be fictional, but in Daring Don't, Rainbow Dash and her friends discovered that Daring Do and A.K. Yearling, author of the books, are the same pony. Rainbow Dash later saved Daring Do from falling into a pit of piranhas and Daring Do described her adventure with Rainbow Dash in her latest book.
Daring Do's pen name, A.K Yearling, is a reference to J.K Rowling, the writer of the Harry Potter books.