Arnook

"water"

- The spirits gave me a vision when Yue was born. I saw a beautiful, brave young woman become the moon spirit. I knew this day would come.

Chief Arnook was the fifty-year-old tribal chief of the Northern Water Tribe. He was born and raised at the North Pole, and he trained as a warrior. Following his father's death twenty years prior to Team Avatar's arrival to the North, Arnook assumed the role of the Chief. Though he was not a Waterbender, the other men respected him, and he grew to become a great leader. Chief Arnook married the daughter of a tribal chieftain and fathered a daughter, Princess Yue. He was a noble, brave leader who always put the concerns of his citizens first.

Past
When Arnook's daughter, Yue, was first born, she was gravely ill. Desperate to save her life, Arnook prayed to the Moon Spirit. He then took his infant daughter to the Spirit Oasis, where the mortal form of Tui, the Moon Spirit, dwells along with the ocean spirit. He placed his daughter in the water under the full moon, and her hair turned white as she was revitalized by a measure of the spirit's own life force. His wife then named her Yue, for the moon.

At Yue's birth, Arnook had a spiritual vision of his daughter, when grown to maturity, becoming the reincarnation of the Moon Spirit.

Arrival of the Avatar and the Fire Nation
When Aang and the rest of Team Avatar arrived at the Northern Water Tribe, Arnook was happy to have the Avatar present as an ally. He introduced him to Master Pakku as his Waterbending teacher. Katara hoped to learn from Pakku as well, but he refused, as only men were allowed to Waterbend in the Northern Water Tribe. Later, Pakku refused to teach Aang after catching him teaching Katara Waterbending. Katara begged for Arnook to have Pakku teach Aang again, to which Arnook said he couldn't force Pakku to do it because it was up to Pakku to decide whom he teaches. However, this problem was resolved when Pakku agreed to teach Aang and Katara after a duel with the latter.

When the Fire Nation stood at the treshold of the Northern Water Tribe, Arnook asked for volunteers for a dangerous mission. Sokka was the first to rise to the occasion and offer his services. Initially Arnook briefed everyone on their mission at hand, but soon entrusted Sokka to share his knowledge with Hahn, the leader of the mission and Yue's fiancé. After the two men got into a fight over "Yue's perks", Arnook took Sokka off the mission and appointed him as Yue's bodyguard instead. Even though Sokka carried out his bodyguard duties, he was unable to prevent Yue's fatal fulfillment of her destiny during the Fire Nation siege. She became the new moon spirit after the previous was slain by Zhao. Later, Arnook spoke with Sokka and revealed the vision he had when Yue was born: a beautiful, brave, young woman would one day become the Moon Spirit.

Due to the death of his daughter, it is unknown who will succeed as Tribal Chief after Arnook's death.

Personality
Arnook was a gentle, wise and passionate leader who cared deeply about the welfare of his people. He was a very spiritual man who deeply believed in the power of the Moon and Ocean Spirits, pleading with them to save his ill daughter and calling upon them to aid the Northern Water Tribe after realizing the Fire Nation would soon lay siege to the tribe.

Trivia

 * The name Arnook is possibly a nod to the subject of director Robert J. Flaherty's 1922 documentary "Nanook of the North"; Nanook was a celebrated Inuit hunter.