Before Wan's and Raava's final battle with Vaatu and had to go around to the other Lion Turtles, Wan met someone he didn't expect to meet. While visiting the Water Lion Turtle Wan and Raava meets a Waterbender girl named Yun. Right away there was a connect between the two and Yun made the decision to accompany Wan on his Journey. With the Harmonic Convergence, and the final battle with Vaatu, Yun knows that Wan and Raava was going to need some help. She went to the other three Lion Turtles and asked if one of them would bestow their element gift upon her.
 
The Lion Turtle of Earth and Air denied her request, but the Fire Lion Turtle agreed. He would give her the gift of fire but warned her that no human has ever held more then one element at a time. Yun understood the risk but asked for its gift. Saying that Wan and Raava were going to need help in the upcoming battle. This made Yun the first human, besides the Wan, to be able to hold more then one element at the same time. It will be through their battles, victories and failures that they'll forge a bond that'll last a thousand lifetimes.

Avatar Wan x OC

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