This is the list of characters from the {{Creator/Nickelodeon}} series ''WesternAnimation/AvatarTheLastAirbender''. For the sequel series, please check out ''Characters/TheLegendOfKorra''.

Due to the LoadsAndLoadsOfCharacters, this page is split by CastHerd.
* [[Characters/AvatarTheLastAirbenderAvatarAang Avatar Aang]]
* [[Characters/AvatarTheLastAirbenderTeamAvatar Team Avatar]] [[labelnote:Character List]]Aang, Katara, Sokka, Toph, Prince Zuko, Suki, Appa, Momo[[/labelnote]]
* [[Characters/AvatarTheLastAirbenderMentors Mentors]] [[labelnote:Character List]]Previous Avatars, Monk Gyatso, King Bumi, Master Pakku, Jeong Jeong, Piandao, Hama, Guru Pathik[[/labelnote]]
* [[Characters/AvatarTheLastAirbenderAllies Allies]] [[labelnote:Character List]]Hakoda, Uncle Iroh, Haru, Mechanist and Teo, Princess Yue, Earth King Kuei[[/labelnote]]
* [[Characters/AvatarTheLastAirbenderTheFireNation Fire Nation]] [[labelnote:Character List]]Princess Azula, Fire Lord Ozai, Princess Ursa, Mai, Ty Lee, Zhao, Combustion Man, Sozin, Azulon, Lo and Li [[/labelnote]]
* [[Characters/AvatarTheLastAirbenderTheEmberIslandPlayers The Ember Island Players]]
* [[Characters/AvatarTheLastAirbenderOtherCharacters Other]] [[labelnote:Character List]]"Gran Gran" Kanna, Blue Spirit, Jet, Freedom Fighters, Cabbage Merchant, Foamy Mouth Guy, June, Long Feng, Koh, The Boulder, Xin Fu and Yu, Jin, Wan Shi Tong[[/labelnote]]
* [[Characters/AvatarTheLastAirbenderComicCharacters Comics]] [[labelnote:Character List]]Kori Morishita, Sneers, "The Dark One", Penga, Ho-Tun, Ikem, Rafa, The Mother of Faces, Mai's Father, Kei Lo, The Air Acolytes, Satoru, Nutha and Niyok, San, Jojan, Giya, Malina and Maliq, Gilak[[/labelnote]]

[[folder: The Avatar]]
!The Avatar
->''"We are bonded forever."''

[[caption-width-right:345:''"You think your power has limits. I say it's limitless."''[[note]]From top to bottom: Wan the first; his 10,000 year legacy ending with Kyoshi, Roku, and Aang; Korra the transition point[[/note]]]]

The Avatar is ''the'' most powerful being in the ''Avatar'' universe. The Avatar is the only being which can master the four elements and can energybend as well. It first came to existence 10,000 years before the main story, as the result of a permanent fusion between Wan - the first man to not only possess the power of more than one element, but the first human bender as well - and Raava, the spirit of light and peace. The Avatar is a reincarnation of Wan throughout the millennia, starting a cycle that began the moment Wan died.

The Avatar is able to access the power of Raava and his or her previous incarnations in what is called the Avatar State, giving them unlimited power for as long as they are in said state. However, any given incarnation of the Avatar is not immortal, and if he or she is killed in the Avatar State, the Avatar Spirit will die and the cycle will end (though Raava herself will survive the death of the Avatar Spirit, and will eventually reform elsewhere).

The Avatar's mission in life, a task set forth by Wan himself, is to maintain balance of the world, as well as between the mortal and spirit realms. This job includes bringing peace between groups in conflict, or defeating threats to world peace such as imperialist tyrants bent on conquest. The Avatar is also the spiritual leader of the world; due to being half spirit, the Avatar is most powerful in the Spirit World, as opposed to other humans who normally are powerless in comparison. The Avatar must master the four elements and attain a certain degree of balance within themselves; they are then referred to as a "fully realized Avatar".

For tropes specifically relating to Korra, Aang, the Avatars who preceded them, or Wan himself, please visit the various pages in the Character pages for both ''Avatar: The Last Airbender'' or ''The Legend of Korra''.
* TheAtoner: Until perhaps the Harmonic Convergence of Korra's time, the Avatar's mission in life is partly to honor Wan's dying wish to continue making up for his grave mistake in releasing Vaatu.
* BigGood: The Avatar is to attain this goal once they have mastered all four elements and found inner peace. This usually negates an Avatar's chance to have political power, since their job is to essentially be the leader of two entire worlds.
* BullyingADragon: ''Avatar Extras'' dryly noted that most people who face or challenge a fully realized Avatar in combat are pretty easily embarrassed.
* ChangingOfTheGuard: Wan through Aang represents the first full Harmonic Convergence Cycle for the Avatar or the course of about 10000 years. Korra started off as part of Wan's legacy until [[spoiler: Raava was attacked and she permanently lost her connection to her past lives during second Convergence. This makes her the new 'first' avatar, as no one else will ever be able to directly commune with Wan-Aang.]]
* TheChosenOne: Treated as one as far as the world is concerned, with each nation having the same, or similar methods to recognize the him or her when he/she is born, and during the War was treated as a symbol of hope to be revered or destroyed. [[spoiler: A tribe feuding for a hundred years took Aang's bald-face lie at face value simply because he claimed to know the tribe's forefounders.]] Avatars are commonly involved with, connected to or directly responsible for history changing events and important individuals. On top of all that, their destiny is to battle Vaatu every ten thousand years to prevent a dark-spirit apocalypse.
* ElementalPowers: One of the main advantages of being bonded with Raava is that the Avatar can use all four of the elements, air-, water-, earth- and firebending, instead of just the one like everyone else. Even then the Avatar can mostly only use one at a time. With the Avatar State active they can use all four at the same and with a tremendous power boost. Their ability to use multiple elements also makes it easier for the Avatar than other benders to apply bending techniques across elements, such as redirecting lightning by applying Waterbending principles to Firebending.
* FusionDance: The Avatar came to be when Wan and Raava fused together during Harmonic Convergence.
* GlowingEyesOfDoom: As seen above, the Avatar employs these when entering the Avatar State.
* GodIsGood: The Avatar is the closest thing to a god that the ''Avatar'' universe has, and their job is to protect the worlds and its people and spirits.
* GodInHumanForm: The Avatar is a reincarnation of Wan, a human who bonded his soul to the spirit of life, Raava. All Avatars can tap into her power by entering the Avatar State, which also allows them to access all the knowledge she has and all the knowledge of Wan's incarnations.
* GodOfGood: The Avatar is the human incarnation of Raava, the great spirit of light and peace. She bonded herself with a human host in order to defeat her evil opposite [[GodOfEvil Vaatu]] and later bring peace to both physical and spirit worlds. Since then, the Avatar has also maintained equilibrium between the four nations of the physical world.
* HeroicSecondWind: The Avatar State is often used as a last resort when the Avatar requires an extra boost of power to accomplish the task at hand.
* HumanoidAbomination: Benevolent ones of course, but every avatar is a being of godlike power resulting from a spiritual fusion with Raava.
* TheJuggernaut: While not immortal, it's easy to tell that a fully realized Avatar is considered unstoppable even by the top tier of normal benders.
* JackOfAllStats: It's ZigZagged with how much the Avatar fits this versus MasterOfAll, but for all of their purported skills with multiple elements, Avatars are usually shown as not being nearly as skilled as the most powerful normal benders in each element. For instance, they're rarely shown using advanced special categories of bending such as metal-bending on lightning-bending.
* LegacyCharacter: Via reincarnation, every avatar after Wan takes up his legacy and title.
* MasterOfAll: The purpose of each Avatar's training is to turn them into one of these, mastering all four elements to an even greater degree than normal benders who have been training for decades.
* MessianicArchetype: Each avatar is a reincarnated man or woman who possess incredible power and connected to a spiritual plane of existence, and in almost every life has faced off a tyrannical or amoral enemy. Their advice is treated with near-religious worship and world leaders are willing to listen to the advice of a ''10 year-old'' with no knowledge of war or even a complete history of the last century. The last part holds truth, as avatars have the ability to access Raava's memories to seek the wisdom they need.
** Sublty deconstructed as Aang is initially treated as the sole person capable of saving the world and his word is treated as law, while Korra is met with resistance such as [[spoiler: the world leaders not including her in war strategies against Kuvira due to her not being fully recovered. Only when the situation became so bad that they had to defer to her wisdom did they include her]]. This doesn't apply to everyone, however; more common citizens such as an old fisherman had no problem calling out the Avatar for seemingly abandoning the world.
* TheNeedsOfTheMany: This is a dilemma faced by many Avatars in their lifetimes: whether or not to choose between themselves or the fate of the many in a given context. Since the Avatar is the protector of not just the entire world, but the Spirit World as well, an Avatar is usually advised to serve the needs of the many over the needs of the few. This is the reason some Avatars more or less cast off their backgrounds and ideologies (such as Yang Chen), to better serve the worlds as a whole.
* ObstructiveCodeOfConduct: Though not outright stated, while it is the Avatar's duty to protect the innocent, he or she cannot interfere in the affairs of other nations, unless there is a threat to him/herself, balance in the material world, or even a threat that's on a supernatural level. However, world leaders and conquerors abusing their power on their own people tends to be a grey area below a certain threshold but so it's hard to determine that limit to their intervention. As such, this principle has been broken left and right by various Avatars.
* OneManArmy: Any Avatar in the Avatar State can trap gods, crack continents, battle volcanos, and yes, defeat entire armies.
* PhysicalGod: If you manage to push him into the [[SuperMode Avatar State]], you've lost the fight, if not your ''life''. Even a master with the power of a hundred suns can't defeat an Avatar fully in tap with Raava's spirit.
* {{Reincarnation}}: The Avatar's spirit never truly dies as it continuously reincarnates into a new body at death. However, if the Avatar is killed in the Avatar State, the Avatar would truly die.
* {{Retcon}}: The main series never explained what the Avatar State was or what made the avatar so special. Only a tie-in game briefly spoke of The Avatar being the spirit of the planet in a human body. ''Legend of Korra'' book 2 then spent a two-parter establishing that the Avatars (Roku, Aang, Korra herself etc.) are all basically the reincarnations of Avatar Wan and the {{Heroic Host}}s for Raava, the spirit of light and peace, and when the current host dies, Raava takes them with her to the next one.
* ShroudedInMyth: Although the Avatars had access to their previous lives, the recent Avatars were completely unaware about the true identity of the Avatar Spirit and how it first originated. See TheReveal below.
* SuperMode: The Avatar State, which grants the current Avatar all the knowledge and skill of all of their past lives as well as a significant power boost.
* TheReveal: [[spoiler: The true identity of the Avatar Spirit is Raava, the spirit of light and peace. In ancient times, she fused her spirit with Wan, the man who became the first Avatar. All the other Avatars are the reincarnations of Wan. Their duty is to complete Wan's unfinished task to establish and maintain world peace.]]
* ThouShaltNotKill: It depends on the Avatar if this trope is invoked or not. Aang was a notable pacifist who believed all life was sacred, which he was more or less chastised for by his predecessors.
* VoiceOfTheLegion: On many occasions when the Avatar speaks during the Avatar State, the Avatar will speak with apparently the voices of all previous Avatars at once, in a chilling, powerful drone.
* YouCannotFightFate: Every 10,000 years, the Avatar is fated to battle Vaatu, the great spirit of darkness no matter what.

!The Four Nations
These are descriptions of the four cultures.
[[folder:Air Nomads]]
!!Air Nomads

* ActualPacifist: The Air Nomads focused on lives of peace and detachment from worldly desires through meditation. As such they abhorred violence in general and develop styles based on dodging and evading.
* BewareTheNiceOnes: They were friendly, easy-going monks that'll [[SacredHospitality never turn away a hungry guest,]] had no military and according to ''Turf Wars,'' accepted people of all sexual orientations without judgment, ''but'' Gyatso's remains prove they took ''plenty'' of [[TakingYouWithMe Fire Nation soldiers down with them]] during the genocide and Aang implied it could only be due to an ambush they went down or they'd still be around.
* FantasyCounterpartCulture: The Air Nomads are primarily based on Shaolin and Tibetan Buddhist monks and their slaughter and near-extinction parallels that of the invasion and sinification of Tibet by the Chinese Communist Party.
* WarriorMonk: All Airbenders are peaceful monks, but they can use their ability to control the air to dodge their enemies until they are defeated by exhaustion.

[[folder:Water Tribes]]


* FantasyCounterpartCulture: The Southern Water Tribe borrows from various Polynesian and Native American cultures --specifically the Inuit culture-- while the architecture of the Northern Water Tribe capital also adds a heavy dose of Chinese and bits of Nordic influence.
* {{Foil}}:
** In the original series, the Northern Tribe is centered around a major city and has a more structured outlook on life, with its relative isolation from the war allowing it to maintain both its population and its traditions. In contrast, the Southern Tribe has a significantly looser and more egalitarian outlook on life, and has been reduced by the war to a handful of sparsely populated villages that have lost many of their traditions.
** By the time of ''The Legend of Korra'', both tribes are now centered around a large modern capital city. However, the Southern Tribe is more progressive and business-minded, while the Northern Tribe is more traditional and spiritual (albeit more urban).
* ProudWarriorRaceGuy: Much of their culture is based around warriorhood, and many of their greatest achievements are through the battles they've fought.
* SlobsVersusSnobs: There are elements of this existing in the series between members of the Northern and Southern Water Tribes where Northerners view the Southerners to be low-class slobs and peasants while the Southerners view the Northerners as elitist snobs and oppressive aristocrats. This boils into a civil war between the two tribes in ''The Legend of Korra''.
!!Northern Water Tribe

!!Southern Water Tribe

!!Foggy Swamp Tribe

[[folder:Earth Kingdom]]
!!Earth Kingdom


* FantasyCounterpartCulture: While the political situation of the Earth Kingdom (particularly in the capital of Ba Sing Se) parallels that of the Qing Dynasty's last days, its culture draws from every Chinese dynasty; Toph's family wears Tang-era clothing, Aunt Wu's usage of oracle bones for divination comes from the Shang Dynasty, etc. It also has areas influenced by Vietnamese tribal cultures (the Foggy Swamp Tribe, despite their Mississippi Delta accent), pre-Meiji Japan (Kyoshi Island), the Gobi Desert (the Shi Wong desert), and Korea (as seen with the hanbok worn by Song in the episode "Cave of Two Lovers"), each paralleling a real-life tributary held by Imperial China. [[spoiler:After the Earth Kingdom falls for good in ''Korra'', the parallels extend to early 20th-century China, with warlords and bandits running loose until a revolutionary nationalist despot is finally able to reunite the country.]]
* TheEmpire: [[spoiler: Becomes one after Kuvira takes over.]]
* TheFederation: In the larger scope of things, Earth Kingdom is more of a collection of states with the Monarch of Ba-Sing Se as the influential leader rather than a single authority. As a result, many states like Omashu maintained their own rulers while connecting with other states via common culture.
* TheGoodKingdom: Despite its fair share of GeneralRipper and SleazyPolitician, Earth Kingdom is generally mostly benevolent at least until [[GodSaveUsFromTheQueen Hou-Ting]] succeeded the throne.

[[folder:Fire Nation]]
See [[Characters/AvatarTheLastAirbenderTheFireNation here]]