Lightning is one of the main character of Final Fantesy 13. She is the sister of Sarah, a pulse l'cie that had a kinda sad ending. She detests Snow openly and trys to show Hope mindless fighting only leads to nothing.
This is of her when they defeat the first pulse l'cie and they all get turned into l'cie as well. And when the water turns to crystal and everything.
Sadly I couldn't find a picture of them there,and sorry about the king of thieves strap glitch,please comment.