Berry Punch had but one friend as a filly. That one friend would serve to bring the best and worst out her her over the course of her life, making her into a piece a history Equestria wished it could forget.
I am a BIG Rarity fan. I am also one of the biggest Gamers you will ever meet. My favorite MLP FIM episode is a tie between A Friend In Deed and A Dog and Pony Show.