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 depicted as a very cunning, fierce, and determined explorer. She has been shown to be incredibly intelligent, using her wits to solve puzzles, pull off disguises, and escape many of Ahuizotl's death traps. However, it is revealed in Daring Don't that she is a loner, often rejecting company and help whenever it is offered to her, as seen when she turns down Rainbow Dash's, and in an earlier adventure Dr. Caballeron's, offers to help her. It is revealed that through all of the secrecy that comes with her dangerous adventures, Daring Do taught herself not to trust anyone at all. Yet during the climax of the episode, she does open up a little after Rainbow Dash rescues her from Ahuizotl's trap and asserts her friendship towards Daring, and she later admits that sometimes even she could use a little help. At the very end, Daring seems to have lost some of her introverted nature as she develops a bond with Rainbow Dash to the point where she writes about her in her latest book.
While she tends to be reckless and irresponsible (unknowingly causing destruction while on her adventures), she is genuinely regretful when she realizes the damage her actions have caused for the village of Somnambula. She also shows regret when she discovers that Ahuizotl is actually a guardian, and that she has been stealing the relics he was charged with protecting.
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.