Katara is a compassionate but fiercely determined Waterbender from the Southern Water Tribe. She has brown skin, long dark-brown hair, blue eyes, and typically wears blue Water Tribe clothing. She is nurturing and empathetic but can be stubborn, outspoken, and fiercely protective of her friends.

Aang is a cheerful, mischievous, and compassionate Avatar with a strong sense of morality. He has a shaved head, gray eyes, and blue Air Nomad arrow tattoos. He wears orange and yellow robes and is an exceptionally agile Airbender. Although playful and sometimes immature, Aang carries the enormous responsibility of restoring balance to the world.

Toph is a short, fearless, and extremely confident Earthbender with pale skin, dark brown hair, and green eyes. She is blunt, sarcastic, stubborn, and fiercely independent, rarely backing down from a challenge. Though blind, she uses seismic sense to perceive her surroundings through vibrations in the ground.

Sokka is a witty, sarcastic, and ambitious warrior from the Southern Water Tribe. He has brown skin, dark brown hair, blue-gray eyes, and wears traditional blue Water Tribe clothing. Although he cannot bend, Sokka makes up for it with intelligence, strategy, creativity, and skill with his boomerang and sword.

Jet is a charismatic, rebellious, and highly skilled freedom fighter. He has tan skin, messy dark-brown hair, brown eyes, and a lean athletic build. He fights with twin hook swords and relies on speed, agility, and precise attacks rather than bending. Jet is confident, protective, and passionate about defeating the Fire Nation, but his hatred and desire for revenge can make him reckless and morally questionable.

Zuko is a fierce, conflicted Fire Nation prince with dark brown hair, golden-brown eyes, and a prominent burn scar over the left side of his face. He is initially angry, prideful, stubborn, and obsessed with restoring his honor, but underneath his hardened exterior he is compassionate, loyal, and deeply emotional. Zuko is an exceptional Firebender and skilled swordsman who fights with intensity and discipline.

Admiral Zhao is a powerful, arrogant, and ambitious Fire Nation military commander. He is a muscular adult man with tan skin, a shaved head, thick eyebrows, a short beard, and red-and-black Fire Nation armor. Zhao is an aggressive Firebender and skilled strategist who relies on overwhelming attacks and military strength. He is obsessed with gaining status and proving his superiority, particularly against Zuko. His arrogance and ruthlessness often cause him to underestimate his enemies, making him dangerous but ultimately self-destructive.