You think that Derpy is a pony at all? You think with that much love she can be our kind? This muffin-loving Pegasus is actually Milkweed, a female changeling who feeds off fan's love of her...pony personality? After a tragic accident with the Mane 6, she realizes she does have a heart. She created this beloved background pony to blend in and to find a friend in this place and win love for the changelings so they can have love to share, and they won't have a reason to feed. Though, Milkweed asks herself, "Why are they eating cheese?" This is because they are eating what covers what used to be every one of her species' hearts. Though changelings can't die and the cheese will grow back instantly, this is bad.

Rainbow Dash. She's always going to the princess, and Twilight doesn't know this. It turns out Celestia is Rainbow Dash's mother, and they write to each other. This makes Twilight and also BFF Applejack confused. Why isn't RD a princess? Who is her sister? Was she at home for school? To figure it out, Twilight needs to look at a reflection made by a shiny-glass prism.