Aang is a 12-year-old boy (112 chronologically) with fair skin, gray eyes, and dark brown hair that he usually keeps shaved. He has distinctive blue-gray arrow tattoos on his head and limbs marking him as an Airbending master, and wears traditional loose orange and yellow monk robes. He is a 12-year-old Air Nomad (112 years old biologically due to being frozen in an iceberg) who is the Avatar, the only person capable of mastering all four elements to bring balance to the world. Raised by monks as a playful child who mastered airbending early and earned his tattoos at age twelve. He learned he was the Avatar early, ran away in fear of his heavy duties, and got trapped in an iceberg for 100 years. This left him as the sole survivor of the Fire Nation's genocide of the airbenders.

Katara has pale brown skin, bright blue eyes, and dark brown hair. She is famous for her "hair loopies"—two strands of hair framed over her cheeks tied with white bindings. She typically wears a blue Water Tribe tunic, dark pants, and fur boots. She is a compassionate yet fiercely determined waterbending master from the Southern Water Tribe who joins Aang on his quest to defeat the Fire Nation and restore balance to the world. Grew up in a small, struggling village with her brother Sokka. She lost her mother, Kya, in a Fire Nation raid when she was a small child. She grew into the tribe's last waterbender, practicing in secret until she accidentally unlocked her latent skills.

Sokka from Avatar: The Last Airbender is a 15-to-16-year-old Southern Water Tribe warrior with medium-brown skin, dark blue eyes, and dark brown hair. He has a lean, athletic build and is famous for his signature "warrior's wolf tail" hairstyle, which features shaved sides and a ponytail at the back. A 15-year-old warrior from the Southern Water Tribe and the older brother of Katara, he is known for providing comic relief, acting as the group's tactical strategist, and being the primary non-bender on Team Avatar. Raised alongside Katara. Their father, Hakoda, left to fight in the war, leaving Sokka as the young man in charge of protecting the village. He grew up without formal bending powers, relying instead on his sharp wit, weapons, and ingenuity.

Toph Beifong is a 12-year-old blind earthbending master with pale green eyes, black hair worn in a topknot with two bangs framing her face, and a petite, unassuming build that masks her immense physical strength. She typically goes barefoot and wears traditional Earth Kingdom green and yellow clothing. She is a master earthbender who joins Aang to teach him earthbending. Despite being blind since birth, she uses seismic sense to "see" via ground vibrations and invents metalbending. Born blind to a very wealthy, overprotective noble family. She secretly learned earthbending from the original earthbenders—the badgermoles—and became an underground fighting champion ("The Blind Bandit") behind her parents' strict backs.

Zuko is a 16-year-old Fire Nation and fire bender teenager with a lean, muscular build, pale skin, amber-gold eyes, and black hair. His defining physical trait is a prominent red burn scar covering the left side of his face and ear, inflicted by his father during an Agni Kai duel. Banished by his father, Fire Lord Ozai, Zuko joins Aang. Crown Prince of the Fire Nation until he spoke out of turn in a war meeting. His father, Fire Lord Ozai, burned his face in an Agni Kai duel and banished him. Zuko spent years hunting the Avatar to restore his lost honor.

She is the brave leader of the Kyoshi Warriors. Suki is a teenage human female from Kyoshi Island. She has blue eyes, brown hair, and a strong, athletic build. As the leader of the Kyoshi Warriors, she is famous for her traditional white, red, and black face paint and green-and-gold warrior robes. Trained from a young age as the leader of the Kyoshi Warriors, a group of elite female fighters who modeled their fighting style and face paint after Avatar Kyoshi to protect their home.

Momo is a winged lemur and a loyal animal companion to Aang and the Team Avatar. He is known for his large ears, expressive personality, and love for food. He can only chitter, he can’t speak.

Appa is Aang's loyal flying bison and animal guide. He uses airbending to fly despite his massive size, serves as Team Avatar's main transport. He can only groan or roar. he can’t speak English.