Derpy Hooves Cosplay - Dizty Doo - My Little Pony

Leah: "This cosplay is my license to derp."

Derpy Hooves (sometimes referred to as Dizty Doo) is a fictional character from the American animated series, My Little Pony: Friendship is Magic. She was only intended to be a background character, one of several pegasi, with the name "Ditzy Doo". She became a significant character from the series due to an animation goof in the first episode, where her eyes were given a wall-eyed stare for one scene. Fans caught the error, and subsequently named her "Derpy Hooves", based on the Internet slang term "derp". The showrunners adopted the fandom's appreciation for the character, and began including her more purposely with the wall-eyed look and klutzy behavior, as a call-out to the fandom. Derpy has since become a symbol of the brony fandom.