"The Avatar must be compassionate towards all people, and the
only way to do that is to live with them. The Avatar must
experience sadness, anger, joy, and happiness. By feeling all
these emotions, it helps you understand how precious human life
is, so you will do anything to protect it. " Avatar Yangchen to Avatar Aang ...

Avatar
Nationality
Korra
Southern Water Tribe
Aang
Southern Air Temple
Roku
Fire Nation
Kyoshi
Earth Kingdom
Kuruk
Northern Water Tribe
Yangchen
Western Air Temple

The Avatar , formed initially when Wan permanently fused
with Raava during the Harmonic Convergence of 9,829 BG, is
the human embodiment of light and peace through the connection
with the Avatar Spirit. As the only physical being with the
ability to bend all four elements, it is considered the Avatar's
duty to master the four bending arts and use that power to keep
balance among the four nations of the world, as well as between
mankind and spirits. Upon death, the Avatar Spirit causes the
Avatar to reincarnate into the next nation, dictated by the cyclic
order: fire, air, water, and earth. Mirroring the order in which
the first Avatar, Wan, learned the elements, this is also the
traditional order in which any one incarnation is to master the
elements, beginning with the bending art of the Avatar's birth
nation. The reincarnation cycle can only be broken if the Avatar
is killed while in the Avatar State, Raava is removed from the
Avatar and destroyed, or the Avatar Spirit is compromised by
a spiritual infection. Each nation has a method of recognizing the new Avatar.
Among the Air Nomads , this involved presenting infants with a
selection of toys and watching for a child that selected the exact
four that had belonged to past Avatars, called the Avatar relics .
Traditionally, the child is told of his identity as the Avatar on
his sixteenth birthday. However, Avatar Aang was told at age
twelve, in fear of a war starting due to the Fire Nation's
growing aggression, [6] and Korra was discovered as the Avatar
when she was just four years old: she exhibited bending abilities
beyond her native waterbending without formal training.

When an Avatar dies, the next Avatar will be born into the
next nation in the Avatar Cycle. For example, Avatar
Yangchen, an Air Nomad, was reincarnated as Avatar Kuruk
from the Northern Water Tribe, followed by Avatar Kyoshi
from the Earth Kingdom , and Avatar Roku from the Fire
Nation. more to follow

still waiting for the facts i dont know

The Avatar is capable of bending more than one element
simultaneously. Avatar Aang first demonstrated this ability
while stranded in the desert, when he bent water from a cloud
into Katara's water pouch while flying with airbending at the
same time, and again in Ba Sing Se when he used his
earthbending to recreate a zoo while traveling on the air scooter
made by his airbending.
During his battle with Ozai, Aang used all four elements while
in the Avatar State to make himself nearly invincible and used
the elements in a highly destructive barrage of attacks. He
first used his airbending to create a spherical shield around
himself, before utilizing the other bending arts to surround
himself with elemental rings of rotating flames, rocks, and water.
The compression of the elements provided Aang with materials
for bending all four elements without sacrificing too much agility
and speed, thus making this an extremely dangerous attack both
defensively and offensively Avatar State
" The Avatar State is a defense mechanism, designed to
empower you with the skills and knowledge of all the past
Avatars. The glow is the combination of all your past lives,
focusing their energy through your body. In the Avatar
State, you are at your most powerful, but you are also at
your most vulnerable. If you are killed in the Avatar State,
the reincarnation cycle will be broken and the Avatar will
cease to exist. " At the 2014 San Diego Comic-Con, the creators described
Korra's lost connection to her past lives as "rebooting your
hard drive". [45]
While pursuing information in Wan Shi Tong's Library,
Katara discovered that one of the Avatar's past lives had
been left-handed.[46]
The term "Avatar" comes from the Sanskrit word avatāraḥ
(अवतारः), which means "descent". In Hinduism, Vishnu
manifests himself as an avatar to restore balance on earth,
during a period of unbalance. more coming

how old is dis muthafuckin op.

Aang became a fully realized Avatar at the youngest
biologically and oldest chronologically known age.
Aang went into the "continuous" Avatar State nine times
during the course of the first series, but only once into the
"non-continuous" State. Aang entered the "continuous"
Avatar State once in The Promise and twice "non-
continuously" in The Legend of Korra.
The biological parents of the known Avatars before Avatar
Korra were never seen or mentioned, with the exception of
a shadowed glimpse of Aang's mother at his birth.
Both Avatar Aang and Avatar Korra were taught by
descendants of the previous Avatar. In Aang's case, Zuko
(Roku's great-grandson) taught him firebending; in Korra's
case, Tenzin (Aang's son) taught her airbending.
When Aang went into the Avatar State at the Southern
Air Temple, Avatar statues across the world lit up,
signaling the return of the Avatar. It is unclear what
triggers this phenomenon, seeing as Aang had been in the
Avatar State for a hundred years and the statues did not
light.
The only Avatars mentioned to have descendants were
Aang, Kyoshi, and Roku. Kyoshi had a daughter, Koko,
with an unknown husband; Roku had children with Ta Min ,
of whom Ursa is a descendant (thus making Zuko and Azula
descendants as well); and Aang had Bumi , Kya, and Tenzin
with Katara.
Korra was the youngest known Avatar to have learned her
status; most Avatars are not told until they are sixteen, but
Korra discovered her ability to control several elements by
the age of four. [7] The only other known exception was
Aang, who was told at age twelve.
Avatars Aang and Korra are the only known Avatars to
have achieved full realization without having full mastery of
every element; Aang at the time showed room for
improvement in earthbending and firebending, as evidenced
by comments from Zuko and Toph, his firebending and
earthbending teachers respectively; and Korra mastered three
of the bending arts but achieved realization shortly after
having unlocked her ability to airbend for the first time.
Besides descendants in the cases of Kyoshi, Roku, and
Aang, and parents in Korra's case, the only other family
members of an Avatar to be shown in eith