Talk:Derpy (EG)/@comment-32725486-20180416165640/@comment-25563752-20191018060659

Her names is Derpy. And in the upcoming EQG special, Holidays Unwrapped, Pinkie even calls her Derpy.

She was also called Ditzy Doo by somepony in an episode, but it's possible/likely that this is just a nickname because she is a bit of a ditz.