She wins the melee tournament, defeating Ser Loras at the end. She’s large, strong, a trained warrior, and ugly. Catelyn pities her for this, but even more for the look Brienne gives Renly when she asks to be named to his honor guard. Young. Naive. A heart to be broken.
It goes without saying that she’s a Body Type. She’s a medieval superhero. To fight this well, especially in an era when every social convention would contradict you, you must need it in your bones. This is a Nine. The strength and competency combined with her personal gentility are the key traits.
Brienne is a wonderful character, and it’s a shame to cut to the chase so soon, but her Enneagram number is easy to spot with only one chapter of information. I am distrustful of George R. R. Martin’s skill in writing women. I have found the main characters — Catelyn, Daenerys, Arya — contradictory and arbitrary at times. I’m going to peg Brienne here, mostly because I don’t trust the rest of the writing about her to be consistent. At this point, she’s very clear.