I remember way before I even watched Attack on Titan and my friends threw me the idea to do the group together, I didn't mind. BUT I had no idea who I wanted to be and they already took their characters, so I didn't have much to do research on. HOWEVER the two people that stood out to me the most was still Hanji and Petra. From reading their bio and then watching them in action really convinced me that they were the right choice. They both were strong and had their own unique perks about themselves. Petra was the first one I chose, perhaps it was the convenience of the same height that we both shared. I still plan on a Hanji in the future.