It's interesting. When I was reading the books, I was telling my brother how great they were and I was talking about Arya. And after I told him about the guys she's killed/had killed, he looks at me and says, "you know she's become evil, right?" And I was like, "NO! She's the best!" But he has a point. She's a POV character but she really isn't a nice guy anymore. Still the best character in the books though.