Yes! After an epic duel in Sozin's Comet/Avatar Aang, Aang (in the Avatar state) pins Ozai to the ground using earth bending. Instead of killing him, though, he uses energy bending to take away Ozai's firebending. Later, we see Ozai imprisoned in a Fire nation cell.
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From information about Avatar: The Legend of Korra, we know that Aang and Katara have a son, Tenzin. Since this is a kids' show, it's safe to assume that they eventually did get married. And Tenzin teaches the next avatar airbending. So There are THREE airbenders.
They fight in the last two episodes. Which is "Into the Inferno" and "Avatar Aang." There are the last two parts of Sozin's comet in Book Three,Fire.
Well Azula already beat Aang at the end of the second book when she zapped Aang with lightning in Ba Sing Se cutting off Aang's connection with all the cosmic energy in the universe
He uses the ancient and long forgotten art of energy bending to remove ozais firbending ablities and then imprisons him.
Aang did defeat the Firelord. He took away Firelord Ozai's bending, so Zuko became the new Firelord.
Aang defeated lord ozi in the last episode, so Aang is a stronger at fire bending.
Firelord Ozai was the most powerful fire bender in the world, until Aang beat him and he became the most powerful fire bender in the world. If you're talking about political power, he also was very powerful in that he's the head of the fire nation.
TO UNLOCK KATARA THE CODE IS painted lady,the code for toph is metal bending,the code for fire lord zuko is breath of fire and finally for avatar aang the code is seventh chakra
Aang masters water first then earth and then fire
*******SPOILER ALERT******** When Aang goes into the avatar state. He is about to master it and Azula shocks him with lightning. He dies but Katara brings him back with the water from the north pole