You were royal advisor to Princess Celestia. Were, until Chrysalis conquered Equestria, taking it from the twin princesses and making herself Queen. When she did, she kept you, making you her advisor, and her servant. Now, you spend your days by her side, letting her do to you as she pleases. She sits down heavily in her throne, making her plump assets jiggle, and notices you're already there. "Awwe, how long were you waiting by my throne for me, dear? Very cute..."