Spirit World


 * ''This article is about the place. For the episode with a similar name, see "Winter Solstice, Part 1: The Spirit World".

The Spirit World is a parallel plane of reality that coexists alongside the mortal world, and is home to the spirits, immortal supernatural entities which often embody different aspects of life and nature.

It used to be difficult and extremely rare for a human, other than the Avatar, to enter the Spirit World; conversely, only a handful of spirits are able to exist physically in the mortal world and they must give up their immortality to do so. The Spirit World and the physical world are closest together during the solstices, which made it possible for spirits to manifest in the mortal world and for humans to pass into the Spirit World. There are also certain locations in the physical world which act as bridges to the Spirit World; these locations are often revered by the cultures living near them, such as the Spirit Oasis in the North Pole. The Avatar acted as a spiritual bridge between both worlds and can travel between them freely. Humans who cross over to the Spirit World cannot use their bending, unless they enter physically, such as through the spirit portals. The portals were reopened in 171 AG, and following that year's Harmonic Convergence, Avatar Korra decided to leave them open for good.

There are few known ways for a mortal to enter into the Spirit World, though humans are sometimes carried there by a spirit as the entity shifts between planes. The Avatar is able to pass fully into the Spirit World at times when and locations where the barrier separating the two realities is unusually weak, such as at Avatar Temples on a winter solstice or at the Spirit Portals at the North Pole or South Pole.

History
After Avatar Wan closed the spirit portals following the Harmonic Convergence of 9,829 BG, the Spirit World and the mortal world became two separate worlds, only connected through a few mediums scattered across the world. As the bridge between the two worlds, the Avatar crossed over several times in a spiritual form in order to converse with the spirits and ask them for guidance. However, after the opening of the Southern spirit portal, humans, such as Unalaq, were able to physically enter once again, and with them, they brought "darkness and anger" that threatened to overtake the Spirit World. These negative feelings were amplified during the Harmonic Convergence of 171 AG, when Vaatu used the increased spiritual energy to break free from his prison inside the Tree of Time. After the Dark Spirit was defeated, Avatar Korra decided to leave the spirit portals open, once again uniting the Spirit and the mortal world.

Overview
In certain places, the landscape of the Spirit World seems to conform closely to an area of the physical world, to the extent where a mortal making the transition might not immediately take notice of the difference. In other places, the geography of the Spirit World has no relation to the physical world and the two settings vary considerably.

Realm of Koh


The lair of the spirit Koh, the Face Stealer, lies below a gigantic, twisted tree. The land surrounding his covert is barren, dark, and scarcely inhabited, except for Koh's faceless victims and at least one gargantuan wolf. For anyone who enters his lair it is advisable to remain emotionless, as Koh steals the face of anyone who expresses their emotions in front of him.

Hai-Riyo Peak
Hai-Riyo Peak is a large mountain located near Iroh's teashop in the Spirit World. Prior to Korra's arrival in 171 AG, the mountain was enveloped by vicious storm clouds and inhabited by numerous dark spirits. Its summit is the nesting site for several dragon bird spirits.

The Fog of Lost Souls
The Fog of Lost Souls is a prison for humans in the Spirit World. The fog spirit that is the prison has the ability to drive humans into madness, trapping hem within their own darkest memory and subsequently prohibiting them from escaping. After Zhao was pulled to the Spirit World by La, his soul became trapped in the fog, where he continued his self-praising dialogue about being a conqueror and a moon-slayer. In 171 AG, Unalaq trapped Jinora in the fog, and Tenzin, Kya, and Bumi also later became imprisoned there after setting out to rescue the young airbender. After Tenzin overcame his insecurity about his identity, the fog momentarily cleared and he was able to rescue his family.

Forgetful Valley


Situated in the Fire Nation, the Forgetful Valley is comprised of thick wilderness and four mystical, crystal-clear pools of water. Occasionally, a wolf spirit will drink from one of the four pools. The valley is home to the Mother of Faces, whose presence is clear upon observing the various fauna and flora which exhibit face-like markings.

Solstices
A solstice is an astronomical event that occurs twice a year. During these solstices, the Spirit World and the physical world are significantly closer to each other compared to the rest of the year. Therefore, during one of the solstices, it is somewhat easier for one to cross into the Spirit World. Aang took advantage of this during the winter solstice to talk to Avatar Roku about Sozin's Comet. Avatar Roku also used the winter solstice sun to aid him in entering the Avatar State.

Spirit Oasis


The Spirit Oasis is a verdant oasis located in the Northern Water Tribe at the base of a waterfall behind the chief's temple. It is the center of all the spiritual energy in the entire North Pole and, unlike the rest of the region, has a warmer climate able to facilitate the growth of vegetation. Two koi fish swim in a central pool of the oasis and are the mortal forms of Tui and La, the Moon and the Ocean Spirits. Under normal circumstances, if one sets foot in the pool it acts normal. However, sometimes it can open as a portal to the Spirit World, and even be used to drag people nearby it to the Spirit World.

The North and South Poles
Both poles once had lush forests that were the home to many spirits. However, in 151 AG, Tonraq destroyed the forest in the North while pursuing a group of hostile barbarians, which angered the spirits, causing them to attack the Northern Water Tribe that night.



During the Hundred Year War, the forest at the South Pole was frozen in ice, sealing the spirit portal and subsequently causing the Everstorm. The forest was later restored by Avatar Korra when she reopened the portal, restoring the southern lights. This could be done in the south only during the winter solstice. There is also a spirit portal at the North Pole that would not have to be opened during the solstice, due to the North's stronger relationship to the spirits. When both portals are open, spirits and humans can pass from one pole to the other freely. These portals were closed by Wan, in order to create and maintain balance between the spirits and humankind, as well as to keep any human from ever physically crossing over to the Spirit World again and risk freeing Vaatu.

The two portals lead to a field where Raava and Vaatu battled during Harmonic Convergence. The plain consists of streams of water and rocky formations and is enclosed by a chain of mountains. In its center stands the Tree of Time, where Vaatu was imprisoned after his defeat.

The Avatar
The Avatar was the natural bridge between the Spirit World and the physical world. The Avatar can use meditation to enter the Spirit World. When doing so, the spirit of the Avatar leaves their physical body defenseless.

Known spirits


The entities of the Spirit World are classified into four categories: light spirits, dark spirits, creature spirits, and human spirits, which includes the past lives of the Avatar. There is a special relationship between light and dark spirits, as one cannot exist without the other, and even if one manages to defeat the other, their counterpart will always reemerge again over time.


 * Avatar Aang: The Air Nomad Avatar before Avatar Korra. Aang was trapped in an iceberg of his own creation for one hundred years, and upon being freed was tasked with the duty of defeating the Fire Lord and restoring balance to the war-stricken world. After his decisive victory over Fire Lord Ozai, he began a romantic relationship with his close friend, Katara of the Southern Water Tribe. The two eventually married, culminating with the birth of their three children, Kya, Bumi, and Tenzin. Aang passed away peacefully of old age.
 * Avatar Kuruk: A Water Tribe Avatar from the North Pole who is in constant pursuit of Koh. He was a laid-back and easy-going Avatar who flirted with girls and liked to show off his bending prowess. This eventually led to his downfall in life when his true love was stolen by Koh as punishment for his carefree attitude.
 * Avatar Kyoshi: An Earth Kingdom Avatar hailing from Kyoshi Island, who was a tough and adamant Avatar. She founded the Dai Li to ensure the protection of Ba Sing Se's cultural heritage. She dealt with the likes of the 46th Earth King and Chin the Conqueror.
 * Avatar Roku: The Fire Nation Avatar who acted as a guide and mentor to Aang throughout his journeys. He was once a friend of Sozin; however, they became enemies after Sozin began to seek world domination, and Sozin later left his friend to die from the poisonous gases of a volcanic eruption. Roku's decision to spare Sozin following a conflict in the Earth Kingdom was a major cause of the Hundred Year War. Roku married Ta Min and was a friend of Monk Gyatso, Aang's former guardian and airbending instructor.
 * Avatar Wan: The original Avatar who merged with Raava to form the Avatar Spirit. He defeated Vaatu and closed the spirit portals at the North and South poles.
 * Avatar Yangchen: A female Air Nomad Avatar from the Western Air Temple who advised Aang in defeating Fire Lord Ozai. A devout Avatar, she was willing to forsake her spiritual customs to ensure peace and safety in the world.
 * Aye-aye spirit: A lemur-like spirit who guarded a Spirit Oasis in the Spirit Wilds.
 * Baboon spirit: A monkey-like spirit that spends his time meditating.
 * Dark spirits: Unbalanced spirits in whom the darkness has taken over the light.
 * Dragon bird spirits: Chimerical creatures often found nesting on top of large mountains.
 * Dragonfly bunny spirits: Bunny-like spirits capable of flight that inhabit the Eastern Air Temple.
 * Fang: Roku's dragon who died along with Roku during the volcanic eruption that destroyed his village.  He can now communicate telepathically with people from the mortal world and give them insight on the Spirit World. As a spirit, Fang is intangible and invisible.
 * Fog Spirit: A spirit that makes up the Fog of Lost Souls. It possesses the ability to effect the minds of individuals who wander through it, effectively driving them insane by imprisoning them in their own darkest memories.
 * Frog spirit: An amphibian-like spirit who inhabited the Spirit Wilds that increased in size when provoked.
 * Hei Bai: Typically taking the form of a panda bear, he manifests himself as a ferocious monster when provoked. A spirit of a dense forest near Senlin Village, Hei Bai retaliated when the Fire Nation destroyed his home. Later, he aided Aang during his journey in the Spirit World.
 * Iroh: After his death, Iroh chose to leave his mortal body to reside in the Spirit World, where he serves tea to numerous spirits in a teashop similar to the one he had in Ba Sing Se.
 * Kind spirits: A couple spirits who frequented the aye-aye spirit's oasis in the Spirit Wilds. They were the first spirits to sympathize with Wan.
 * Knowledge Seekers: Fox-like spirits that assist Wan Shi Tong by gathering old books and parchments to compile more information.
 * Koh, the Face Stealer: An ancient, malicious spirit that steals the face of any creature who shows emotion in his presence. As one of the oldest spirits in existence, he is extremely knowledgeable and possesses the ability to predict future events. Avatar Kuruk holds a grudge against him and attempted to kill him for capturing his fiancée, Ummi.
 * Lion dog spirits: Chimerical creatures often found near mountains.
 * May-Jim: May-Jim is frog spirit with two heads, a female one named May on its left shoulder and a male one named Jim on its right.
 * Mother of Faces: A giant woman with various blank faces encircling her head, she has the ability to give someone a new face. She appears in the Forgetful Valley after her wolf spirit has drank from one of the pools, and it is there she will give her gift of a new face.
 * Moth wasps: Moth-like spirits branded by expressive markings that are highly attracted to light.
 * Painted Lady: The spirit of the Jang Hui River, located in the Fire Nation, where villagers worship and build statues of her in her honor. She expressed her gratitude to Katara for fulfilling her duties after she fled Jang Hui because of the surrounding river's pollution. The Painted Lady is known to possess healing and spiritual abilities.
 * Princess Yue: After Tui was killed by Admiral Zhao, Princess Yue sacrificed her life to revive the Moon Spirit, consequently gaining waterbending abilities. Because of her father's prior exchange with Tui, she has become the reincarnation of the original Moon Spirit.
 * Raava: The spirit of light, peace, and balance in the world. Raava had dueled her counterpart, Vaatu, the spirit of chaos and darkness, for ten thousand years, before Wan was tricked into setting him free.
 * Tui and La: Near the beginning of the world's creation, the Moon and Ocean Spirits departed for the mortal world and manifested themselves as two koi fish in the sacred Spirit Oasis of the North Pole. Tui and La were the original waterbenders, with La being the source and Tui being the originator.
 * Unnamed fire Avatar: A powerful Fire Nation Avatar who could trigger the Avatar State at will and use it to lavabend.
 * Vaatu: The spirit of darkness and chaos in the world. He and Raava had dueled for ten thousand years before he tricked Wan into freeing him from Raava's restraint.
 * Wan Shi Tong: Wan Shi Tong brought his immense library of knowledge into the mortal world in the hopes of bettering mankind with wisdom. With the use of fox-like animals known as Knowledge Seekers, he seeks out valuable sources of knowledge, varying from scrolls to ancient tomes. The library, originally located in the Si Wong Desert, was freely available to anyone who wished to use it until mortals used the knowledge contained therein to further warfare, prompting Wan Shi Tong to bury the library beneath the sand and make it impossible to find. He typically takes the shape of a gigantic black-and-white barn owl, but when angered becomes a wyvern-like creature.
 * Wolf spirit: A giant, ferocious wolf spirit with a prominent image of a face on its chest, which Aang's face morphed into when feeling its presence. This spirit stopped Team Avatar when they attempted to enter Hira'a. It can swallow fire and throw up moth wasps.

Trivia

 * There are no bathrooms in the Spirit World.
 * Spirits have the ability to take over a human's body for short periods of time. When this happens, the human takes on some of the spirit's physical characteristics. However, this possession is not without danger for the host; if a spirit stays in the body for too long, the host will die. During Wan's time, Yao was altered to have treelike characteristics, and another took on lemur-like traits.
 * Several spirits are known to have counterparts. The known pairings are: Tui and La, Koh and the Mother of Faces, and Raava and Vaatu.
 * The only known instance of bending working in the Spirit World is when one physically enters it, rather than just the spirit of the person.
 * Wan is the first known human to enter the Spirit World.
 * Objects from the physical world can be brought into the Spirit World, such as Wan's teapot.
 * Food in the Spirit World does not affect a person's weight.
 * If a person's soul remains in the Spirit World for too long, their body in the physical world will die. Katara noted that it was amazing that Jinora had managed to survive her imprisonment there for a week.
 * Time is malleable in the spirit world, such that beings in the spirit world, even those who enter body and soul, age fairly slowly. This is the case with Zhao, albeit with greyer hair.  However, it is still possible for mortals to die in the spirit world of natural causes, such as Professor Zei.