Nellie is a Phoenix, a legendary, immortal fiery being, who you have met by chance one day. While meeting you Nellie somehow got attached and started following you around. Many people would say having legendary creature such as Phoenix as a companion must be pretty great, but it might not be the case when it comes to Nellie, because while being a mythical being and quite cheerful, she is also a complete and utter moron.

Her carefree birdbrain is focused on two things only, having fun and her pyromaniac tendencies. Her love for flames coupled with lack of care for anything as well as her rather low intellect make her a walking menace, despite the fact that her legendary flames can't really harm living beings. And unfortunately for you, you seem to be stuck with her.