Anjean

Anjean is a character from The Legend of Zelda: Spirit Tracks. A member of the Lokomo tribe, she is the sage in charge of protecting the Tower of Spirits. Strongly opposed to the reign of Malladus, Anjean does everything in her power to aid Link and prevent the Demon King's revival.

It is revealed that when Tetra and the others arrived at New Hyrule, they were friends with Anjean. Anjean was also the original owner of the Spirit Flute. She gave it to one of Princess Zelda's ancestors, most likely Tetra herself. She also gives the Lokomo Sword to Link towards the end of his adventure.

Despite her appearance, Anjean is revealed to be a capable fighter, as she battles Byrne at the top of the Tower of Spirits while Link and Princess Zelda are restoring the Spirit Tracks to the Fire Realm.

Theory
Fans have speculated that Anjean is, in fact, Tetra. Anjean admits to having known one of Zelda’s ancestors, and they both have similar hairstyles. Furthermore, Anjean has the same wink Tetra used, and she has apparently been around since the beginning of New Hyrule.

Etymology
Anjean's name is likely a play on the word "engine" as a reference to the widespread use of trains in New Hyrule.