Derpy is the most popular background character of My Little Pony: Friendship is Magic, to the point where she has had major roles in the show. When she was a filly, Derpy was exceptionally talented, winning or placing very highly in several flying competitions above the likes of Spitfire, Lightning Dust and even Rainbow Dash, but as her eye issue worsened she became unable to keep up. She now works as a delivery mare.