I hate to come in and immediately echo the first opinion shared, but I also have to say Aradia. I find her change from emptily going through the motions of what she knows needs to happen to becoming fully in charge of her perception of the world and being able to enjoy life once she stops being emotionally dead. This is obviously not very subtle given that she also literally goes from dead to alive, but it still really works for me. I also just find her personality very entertaining and enjoy all of her dialogue.