Hei Bai had been the protector of a forest just outside Senlin Village for thousands of years; however, after the destruction of the forest, he became enraged and unaware that it was due to the actions of the Fire Nation, he targeted the nearby Senlin Village and blamed the occupants. As the winter solstice drew near, Hei Bai transformed into his monstrous form and terrorized the village by abducting one villager each day. When Aang came to the village, he attempted to reason with the enraged spirit, but was unsuccessful. Hei Bai became violent toward Aang, prompting Sokka to help Aang by attacking Hei Bai with his boomerang. However, Hei Bai quickly overpowered and kidnapped Sokka and took him to the Spirit World. Later, in an attempt to calm the angered spirit, Aang showed Hei Bai the ac