Nightstar is portrayed as a dark blue Night Fury, the rarest and most intelligent species of Dragon there is (Like Toothless).
Nightstar proves herself to be a very capable fighter, such as when she rushes to Yuna's aid in her battle with the Monstrous Nightmare, Nightstar quickly causes the larger Dragon to back down. Nightstar also shows herself superior to most equines, as proven against Princess Luna in a quick skirmish. Nightstar is very intelligent and seems to have a dry sense of humor. Yuna and Nightstar share an unrivaled bond of friendship with one another. And she has been allowed to sleep in Yuna's bedroom and join her inside Canterlot Castle. None of the other Dragons are shown to have quite as much loyalty as Nightstar. She is protective, supporting, and caring towards her rider. She's not just an amazing pet; she is Yuna's closest friend.
Physical Appearance Edit
Nightstar has dark- night-blue scales covering her whole body, her sides having small light patches in a pattern similar to that of a manta ray. Nightstar possesses two sets of wings (one main pair and one smaller pair near the base of her tail). But when Yuna freed her from a poacher's net, she had a huge hole on her left wing (from the poacher's net). At first Yuna fixes this with a special patch. Then later, she was given a healing brew by Zecora which made the hole in her wing seal up. Thus making Nightstar be able to fly on her own again.
Nightstar's eyes are a bright greenish-yellow. They are located very near the front of her face giving her excellent depth perception and reflexes in flight. She can narrow her pupils to slits when threatened or angry, similar to that of a cat. But when she is docile or happy, her pupils dilate and become more dog-like. Nightstar also has sets of retractable teeth.