The middle CheesePie child and Ponyville's resident bossy-pants has arrived! This little gal takes after her Auntie Twi in many ways, though she hasn't exactly grown out of her "lone-wolf" academic phase. She likes her own company and doesn't really see the use in making friends, since she already has her parents and siblings. That is, until she meets a dorky young prince. She's slowly warming up to the idea of friendship, but if you ask her she'll completely deny it.
Cookie is the only one of her siblings to attend Twilight's School of Friendship, where she studies chemistry and physics with the Princess herself. She also tutors Prince Shining Star when she has the time in her busy academic schedule.