posted by NickelodeonLove
The Avatar is a powerful being who has been
reincarnated over many lifetimes. It is the
Avatar's duty to master all four elements, and to
use that power to keep balance amongst the four
nations. The Avatars follow a cycle, so when an
Avatar dies the spirit is reborn the next nation
in the cycle: It goes Water, Earth, Fire, and
Air. There can only be one Avatar at a time. The
Avatar also possesses the ability to meditate
into the Spirit World. They are also able to
contact the spirits of previous Avatars through
meditation and gain wisdom from them. The Avatar
can also enter what is called "the Avatar State."
In the Avatar State, the Avatar is at their most
powerful, but also their most vulnerable. The
Avatar State is signified by a glowing of the
eyes (and in Aang's case, glowing arrow tattoos).
When in the Avatar State, an Avatar's bending
strengh is heightened and he or she can perform
very powerful moves. But if an Avatar is killed
while in the Avatar State, the Avatar cycle is
broken, and the Avatar ceases to exist.