Just search for the title (My Little Pony Season 5 Episode 14)  It's literally a line and the character is on screen for a few seconds. They're a one-off joke. If the creators actually wanted to be cruel, they'd make a big focal point of the episode about them. This is nothing worse than a joke about a braces wearing nerd tripping over their untied shoes and having their books and glasses go flying, or a goth person holding a box cutter and crying about why life is so wretched.