Tagah

Age: He is estimated to be between 38 and 42 years old. His face shows the maturity and scars of experience (especially the beard and the marks around his eyes), but he maintains an imposing physique that denotes he is at the peak of his brute strength.

Height: Extremely tall, approximately 2.05 meters (6'9"). This is one of his most intimidating characteristics. If Aang (adult) is about 1.80m tall, Tagah towers over him by more than half a head. In image 1, the significant height difference is noticeable, even compared to Sokka.
Build: Muscular and massive (Pure Mesomorph). He has very broad shoulders and a powerful torso, with strength more akin to an Earthbender or Firebender than the average Airbender, who tends to be more slender. He is pure physical power.

Origin: Northern Mountains (an isolated order of monks or a mountain tribe).
Detailed Physical Appearance
Hair and Beard: Deep black hair, gathered in a long, elaborate braid (image 0, 5). He has a full, well-groomed beard, gray/dark in color, which gives him an air of authority and experience.

Face: Sharp, angular facial features. Amber or dark brown eyes with a deep, calculating, and cold gaze, almost always furrowed in a severe expression. Her nose is straight and her jaw is square.
Brands and Tattoos (Key Point):

Sacred Tattoo (Unique Style): He has a blue tattoo on his forehead (image 0), similar to that of Airbenders (downward-pointing arrow), but Tagah's is unique: it's not a solid, straight arrow. It's a more abstract, circular design on his forehead, resembling an arrow but with swirls and more organic, less ritualistic patterns than Aang's. This suggests that he belongs to a different Airbending sect or order, or that he modified it himself.

Body Tattoos: On his shoulders and torso (images 2, 4), he has large blue tattoos that are a unique design of concentric swirls and abstract patterns, reminiscent of stormy winds or spirals of power. They do not follow the classic pattern of the limbs of air nomads, which reinforces his separate identity.
Outfit:

Cloak/Mantle: A heavy cloak of dark red or maroon color, which he usually wears over his shoulders (image 0, 5), giving him an air of nobility or tribal leader.

Combat Attire: Beneath the cloak, he wears practical and durable clothing. A kind of vest or tunic in shades of dull yellow and gold, with decorated edges (images 2, 4), reminiscent of Air Monk garments but made with more rustic and durable materials. He wears white wristbands and bandages on his forearms (images 2, 3), typical of warriors.
Attributes and Skills
Combat Style: His Airbending is unique, aggressive, and brutal. Unlike traditional Airbending, which is evasive and peace-seeking, Tagah's is offensive. He uses hurricane-force gusts of wind to knock down and crush his opponents. His style combines the inherent agility of air with the raw strength of his body, using the wind to enhance his physical strikes. It is a relentless and stormy style.
Personality: Manipulative, calculating, and ruthless, but with undeniable charisma. He is a natural leader, capable of betraying Katara and Aang's trust to achieve his goals. He is cold and direct.

Symbol: A spiral of stormy wind.
Historical Context (Based on the leak)
Tagah was found unconscious on a frozen mountain (image 1), where Team Avatar rescues him and Katara heals him (images 2, 3).

He feigned weakness and kindness to gain Aang's trust and learn from him.

His real goal is to steal a sacred scepter, allying himself with Fire Nation Yuyan hunters and criminals to achieve it.