Derpy Hooves

Derpy, also known as Muffins and Ditzy Doo, is a female Pegasus pony who was given the name Derpy Hooves by the show's internet following due to her cross-eyed "derpy" expression in the first episode. The name has since been adopted by thecrew and Hasbro. Starting with Feeling Pinkie Keen, the show's crew began giving the pony crossed eyes intentionally and later gave her "Where's Waldo" type cameo appearances as a nod to the fans. The character is addressed by Rainbow Dash in The Last Roundup as Derpy, where she speaks for the first time. The scene was later altered so Rainbow no longer names Derpy, in addition to her voice being altered and eyes being less crossed. She is called Bubbly Mare or Party Filly, among various others, in some merchandise, and she is called Lazy Fan in some other media. She shares her design with Sunshower Raindrops.

In When the Cold Breeze Blows Away, she and her friends would be framed for attempting a terrorist attack on the Gerasecian Federal Postal Service Headquarters in Silbervia and killing Officer Azubah Berrysparkle of the Federal Police of Gerasecia by the Black Changelings, so she would join the Grand Alliance so that she would hope that her justice would occur on her.