Nebula is Twilight's younger sister that followed him from their original clan from the shadows. She has always followed Twilight in some way- talking about magic and mystery, trying to be something she's not. Everyone knows Twilight's abilities are unique and unknown.

Nebula knows this herself. Yet she still continues to play with forces she doesn't know the power of. She knows it's dangerous, but what is the cost of a little risk for huge reward? If she can learn magic, it would bring her and her brother closer than ever before. Maybe he would stop pushing her away and let her help him for real. She would do anything to keep her brother only she seems to see fading away into his own abilities.