Jarvia

In life, Jarvia's main goal was to become a lich. She would go after any information she could about the best way to do so, even at the expense of others. Her fear of death had made her a bitter cold, humorless, and apathetic person with a one track mind. Ironically, she specialized in offensive fire magic. She also liked to keep spares of her possessions in case things go wrong, especially her sunglasses and her own body.

Eventually, she finally did it. And is much more lively and friendly now that she's basically immortal. She even started thinking about having a kid (adopting, of course).