Legendaries

Legendary Elementals are a special kind of Elementals that each have a unique species that appears only once every reincarnation. There are different kinds: gods, legendary and mystical Elementals.

Gods
The gods of this world are Arceus, Giratina, Dialga and Palkia. They are, technically, immortal.

Arceus is the mother of everything and older as time itself. They have the power of creation. Not much is known about Arceus itself, as the story of creation only gives a vague picture of who Arceus used to be.

Giratina was the first being Arceus created. With her creation and immense power, a second world came into existence as well: The Distortion World. She could travel between both worlds and had the strongest powers of all Ghost type elementals until she gave pieces of her broken heart away, creating witches in the progress. If she gets killed she will be reborn in the Distortion World and can only change dimensions again if someone summons her.

Palkia is the lord of space. With his power, he created the land and the sea, the mountains and every matter of the planet.

Dialga is the lord of time. With his power, he made time go on in a singular string with past, present and future.

The two brothers wanted to see the life their mother has created, but the Elementals feared the odd looking deities, and banned them in two orbs: The Lustrous Orb and the Adamant Orb, which were in possession of many different people over millenniums, almost loosing their true meaning of holding the creators of the world.

Legendary Elementals
Legendary Elementals are a group of Elementals who are seen as mortal deities and have great magical abilities, no matter their type. Whenever they die, a few months later a reincarnation with no memories of their past life is born again. Being born as a legendary elemental comes with many obligations, something hard to follow for a few of them.

Ho-Oh & Lugia
Ho-Oh is one of the two reincarnations always born in New Johto since the country itself was left behind by its inhabitants. The legendary flying-type Elemental is said to represent the rainbow, which is why their hair glistens in rainbow color whenever hit by light.

Lugia is one of the two reincarnations always born in New Johto since the country itself was left behind by its inhabitants. They are known to be able to destroy whole cities with a single beat of their wings, something that's kept under control with cutting them off with a curse.

Both are supposed to pray for saftey of the country each week at the Bell and Brass Towers to make sure New Johto doesn't meet the same fate as Johto itself.

Entei, Raikou and Suicune
These three legendaries are always born as siblings and have incredibly powerful fire, electric and water magic. An early Johtonian legend said them to be the servants of Ho-Oh - yet nowadays this is barely the case. The trio is focused on serving the people with power, wisdom and courage.

Articuno, Moltres and Zapdos
Three legendaries that are usually born as siblings. Depending on their birthplace they represent what's needed most in the respective countries. Phoenian Articuno, Moltres and Zapdos stand for tradition, reconstruction and progress. Meanwhile the Galarian Articuno, Moltres and Zapdos are representative of empathy, persistence and strength. They used to be servants of Lugia but this hasn't been the case for hundreds of years, making it an old tradition no one seems to remember.

Groudon, Kyogre & Rayquaza
Groudon is one of the three legendary Elementals of Hoenn. Known as the deity of earth, he can cause major earthquakes and crevices.

Kyogre is one of the three legendary Elementals of Hoenn. As the deity of water they have destructive powers: they can cause floods, rainy thunderstorms and tsunamis.

Groudon and Kyogre are born at the exact same time and share a deep bond, which leads them to either fight to death and destroy the land or be fated lovers. If one of them dies, the other one dies as well. To avoid conflict both are taught to never use their magic, no matter how bad the situation might be.

Rayquaza is one of the three legendary Elementals of Hoenn. For as long as Groudon and Kyogre have existed, Rayquaza has always been around to prevent the two from destroying Hoenn. However, not being bound to Hoenn like the other two gods Rayquaza might be reincarnated in different parts of the world, sometimes leaving Honen defenseless against the destructive powers of their gods.

Latias and Latios
Latias and Latios are always born as twins. Both are highly empathic, peaceful and have the power of precognition.

Reshiram, Zekrom and Kyurem
For thousands of years these three dragons were one being known as the „ancient dragon“, creator of the dragon mountain. Their reincarnation was one of the strongest Elementals to ever exist - yet, always lonely, because most feared their immense power. In their desperation, the dragon split up themselves up two times, creating two children.

One was Reshiram, the dragon of Reality, while the second one was Zekrom, the dragon of Wishes. Loosing parts of themselves the legendary dragon no longer was whole, but only a shell of his former self, becoming Kyurem. Kyurem lost all of his glory he once had as the legendary dragon and lost his mind, freezing Phoenie all over. However, he was captured and locked away. His two children Reshiram and Zekrom were adopted by the King of Viur, King Gropius.

It is said that Kyurem left behind a strange object, called the DNA Splicer, which allows Kyurem to merge with his children to turn back into the legendary dragon. Rumours say that this very DNA Splicer is hidden somewhere in the Freedom Fighters Dojo.

Reshiram and Zekrom were the ones who started The Great War.

Xerneas & Yveltal
As soon as there was life, the first Xerneas came to life. Said to be the main guardian of life, Xerneas has not only the ability to bring dead people back to life, they can also cure an immense amount of sicknesses, wounds and diseases. Their powers are limited, though. No Xerneas can revive the Undead, people who died of high age or people who's bodies have suffered irreparable damage, like a very bad accident leaving the victim mutilated. Decapitation can be healed, but not without the revived person remaining with severe brain damage. Besides this, Xerneas also can't revive someone who's been dead for more than 2 days.

Every reincarnation of Xerneas is celebrated as a miracle and a ray of hope.

With the first deaths, the first Yveltal came to life. Yveltal is said to be the omen of death, yet also the guardian for those who have passed away, guiding souls a way to the afterlife. An Yveltals powers are fleeting - they can not take someones life, but can see the trauma and disturbing pasts of those around her, reading from their dark crystals growing in their bodies. This will lead many reincarnations of Yveltal to be shunned and depressed.

Lunala and Sogaleo
Lunala and Sogaleo live in their own releam unseen by most Elementals. There isn't much known about their powers.

Spectrier, Glastrier and Calyrex
Spectrier is one of the deities of Galar. They are born blind which makes them more sensitive to feeling the life energy of all other beings around them. They can use very strong ghost type magic.

Glastrier is one of the deities of Galar. They have been said to be more ice than person, aggressively destroying anyone and anything in their way. They possess incredibly strong ice powers.

Calyrex is a deity born in Galar said to be the harvest deity of the land. After turning 8 years old they are bought to a temple in the Crown Tundra to pray for a good harvest in spring and learn grass type magic powerful enough to save Galar in case of a famine.

Hundreds of years ago Glastrier and Spectrier used to be one deity. But after the mother of one reincarnation had twins, Glastrier and Spectrier respectively, they keep being reborn seperated as siblings. Both have a natural drive to serve und protect Calyrex.

The Golems
The Golems are a group of Legendary Elementals born in different countries each. Living in temples they are supposed to teach the world about Regigigas doings. They are always assigned a guardian, someone from the family taking care of their respective temple.

Mystical Elementals
Mystical Elementals follow the same rules as Legendary Elementals but are generally weaker and seen as less important. Few refer to them as deities.

Celebi
Celebi is a Mystical Elemental born in Phoenie. Despite their weak magical powers Celebi is the only Elemental able to lift the Crypto Curse.

Mew
Mew is one of Phoenie's Mystical Elementals. They have the same shapeshifting abilities as dittos and are known as the "key of life" since they can change their DNA temporarily to anything's. This can be used for medicine but also unethical experiments. Each Mew will be assigned a knight of a certain family at birth to protect them at all costs.

Mewtu
A mystical being that can only be born from the direct bloodline of Mew. They are seen as a rare mutation of the Mew species, yet so different that the two cannot be compared. Mewtu has incredibly powerful psychic powers and can read minds. A lot of people will be drawn away from Mewtu, since they tend to behave oddly.

Reproduction
Legendary or mystical elementals can be born by anyone as long as their mother shares at least one of their types with them.

While the gods are infertile, legendary and mystical elementals follow the same rules as common elementals when it comes to reproduction. If a female legendary or mystical elemental gets pregnant their child will share a species with their grandmother.

Trivia

 * Legendary and Mystical Elementals have been prosecuted and executed in the past in fear of their abilities and powers. This happened again during Reshiram's reign.
 * It's common for them to dream about the lifes of their past reincarnations, including their families and lovers but also the many ways they died.
 * Many use the fame that comes with their name to start a career, especially in popular jobs like the entertainment business.