Aang and friends arrive in the Earth Kingdom to begin his earthbending training, but a local general convinces Aang that all he needs to do is learn to control his Avatar state. Azula, Zuko's sister, arrives to escort her brother and uncle back to the Fire Nation. Written by
Did You Know?
The original script had Azula vaporize the ship captain after he mistakenly refers to Zuko and Iroh as prisoners, thus blowing Azula's cover story. This was changed because the creators deemed it to be too intense for younger viewers. See more
In Book II: Earth- Chapter 1: The Avatar State when Azula and Zuko are fighting on the ship she uses the high level lightning technique. However, the first time she uses it against him it plays the Firebending sound instead of the electrical sound played normally. See more
The Avatar State is a defense mechanism. Designed to empower you with the skill 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.
What do you mean?
If you are killed in the Avatar State, the reincarnation cycle will be broken, and the Avatar will cease to exist.