Aonung Tonowari'itan

Aonung is a fifteen-year-old Na'vi hunter / free-diver from the Metkayina clan in the village Awa'atlu and the eldest son of the clan leaders, Tonowari and Ronal, and Tsireya's older brother. Aonung is a mouthy, arrogant, teasing teenager that bullies the Sully children for their appearance and the fact that they technically have "demon" blood, or in other words, have human blood. Initially, Aonung seems to hold prejudice towards the forest Na'vi for not having the similar physique that the ocean Na'vi have. He often insults the older Sully children for their weaker endurance underwater, and finds amusement at Lo’ak’s initial struggle taming an Ilu. Similar to his mother Ronal, he makes racist and xenophobic comments at Kiri, calling her and Lo'ak freaks and not true Na'vi. Due to being skilled in hunting and diving, Aonung is well-liked and admired by his peers, usually seen in company of his best friend, Rotxo. Aonung enjoys bodysurfing and plunge-diving through the reef wall tunnels during changing tides. As the only son of the clan’s leaders, he would be pressured to meet his parents’ high expectations, masking it with reckless behavior. He rarely speaks up in the presence of his parents, especially during the latter’s scoldings.

The Metkayina live along the shores of the Pandoran oceans, on islands or near the mainland. Their homes are marui pods which are built into the roots of mangrove-like trees spanning the islands. These homes hang directly above the water presumably for easy access for swimming. Massive seawall terraces, similar in appearance to travertine terraces, guard the villages from strong waves and provide an easy place for the clan to fish. Some of the Metkayina villages have existed for thousands of years. Structures are constantly renewed but seldom replaced. The main village of Awa'atlu is protected by a seawall 6 kilometers in radius. It has small docks for canoes, a centralized ilu pen and communal areas for gathering, eating and the telling of tales and singing of songs. The islands of the Metkayina and the waters surrounding them are home to many unique specimens of fauna and flora, such as the dorado verde, pincer fish, and papa mantis tree. The Cove of the Ancestors is an area sacred to the Metkayina and houses their primary sacred site, the Spirit Tree. The Metkayina have a close relationship with tulkuns, sentient, whale-like creatures of Pandora, and are able to communicate with them. The Metkayina consider them to be their siblings, with each member having a tulkun "spirit brother/sister", and share their religion. Just as clans such as the Omatikaya and Olangi ride direhorses to trek the landmasses of Pandora, the Metkayina use ilu as their companion of choice for gliding across the Pandoran oceans. During combat, skilled hunters of the Metkayina ride the skimwing; taming one is also a rite of passage into adulthood, similar to how some mainland Na'vi clans must tame an ikran as they come of age. They use Na'vi Sign Language to communicate with each other underwater, as well as with the tulkun. The clan, like other reef clans, practices the art of tattooing. All of the tattoos are unique to the individual and chronicle their life. The locations of each tattoo carry a symbolic meaning: tattoos over the heart and chest symbolize the safe embrace of the central island. Arm tattoos represent the more exposed protective shield of the seawall. Thus, a hunter of the deep sea has densely tattooed arms and less on their chest. The tattoos are considered a gift both from Eywa and the clan and are created with inks from special animals. The Olo'eyktan has the most intricate tattoos within the clan, spanning much of their body. Members receive their first tattoo after they complete all of their rites of passage into adulthood. One of their rituals for newborns is known as First Breath. This a highly symbolic birth ritual that takes place with the participation of the entire clan. It takes place in shallow water, and the Tsahìk helps the mother give birth to a child that emerges directly from the womb into the water. This is a symbol of Metkayina's deep connection to water, which is their second home. The newborn then has to swim out of the water on its own, which is a symbolic transition from this element to air. The name of the ritual refers to the first breath the child takes after surfacing. Much like Omatikaya clan teenagers, young Metkayina members must complete a number of coming-of-age rituals, known to the Na'vi as iknimaya, before they can be considered adults. One of these rites includes bonding with a tsurak (skimwing), others are various tests with their tulkun spirit brother or sister. Once a Metkayina has completed all of these rites, they are bestowed with a special garment, their first tattoo, and three beads for their songcord.

Aonung, as well as the rest of the reef clans, have adapted seemingly for an aquatic lifestyle, bearing considerable differences from mainland Na'vi. Their eyes are enlarged considerably and feature a blue or green color rather than yellow, their forearms and lower legs have expanded to include a fin-like structure known as a 'strake', and the tails are broadened to form a paddle shape and lack a tuft of hair at the end. They also have a nictitating membrane, or 'third eyelid'. Stronger upper bodies can be observed, especially in males, who also possess a slightly different chest structure from mainland males, as evidenced by the "X" shape on their chest. Curly hair appears to be the norm within the clan. Their skin also sways to a more cyan or turquoise color than the traditional blue, with fluid, ripple-like stripes. Like Terran sharks and other marine creatures, the Metkayina have distinct areas of lighter coloration on their underbellies and faces. They also probably have larger spleens, giving them more oxygen when under water.