Elemental

Elementals (精霊), like Demons and Angels, are a race of naturally forming Spiritual-Lifeforms. They reside both in nature as well as the Spirit Realm and often lend their power to people they like if they ask for it.

About
Elementals are -as the name suggests- beings who embody a specific element. They come into being from either a large gathering of natural energy or as offshoots born from a higher elemental. Their spiritual bodies are capable of taking magical energy and transforming it into natural energy in the form of their respective element which, unlike regular magic, fully obeys the laws of physics.

Evolution Line
The vast majority of the race is made up of Low Tier/Lesser Elementals which have knowledge and sentience but near non existent ego/personality, they'll lend their power to almost anyone but in turn the power they offer is minimal.

Beyond lesser elementals are Medium Elementals, Lesser elementals who have lived long enough and gathered enough natural energy to evolve into a higher species. Medium elementals take on a proper appearance and have much more present personalities (sometimes even able to hold conversations) and can fight properly, making them a much more useful ally in battle when summoned than lesser elementals who can only lend you their power.

Greater/High-Tier Elementals are the highest stage of elemental that one is likely to ever see in their life-time. They take on a much more humanoid appearance and have firmly established personalities. The power they wield is immense and usually well within in the realm of Special A, making summoning one the most reliable option to fight Arch Demon's. The caveat to this power is that they're highly fickle beings who only lend their power to people who they find both exceptional and that they like on a more personal level. Gaining the support of a greater elemental much less being able to summon one is something that only happens on rare occasions and such people tend to go down in history as legendary champions.

At the farthest end of the elementals normal evolutionary path are Elemental Lords, Legendary beings that you're more likely to find in fairy tales rather than actual historical events. Elemental Lords are immensely strong beings comparable to Disaster Class threats such as Demon Lords and lend their power on extraordinarily rare occasions usually only in the form of contracts made with Spiritual Magic rather than in summoned form.

At the very top of the Elemental Hierarchy lies the Supreme/Grand Elementals, egoless masses of power that have been around since the dawn of creation as well as the Elemental Queen a unique individual who wields all 8 elements and rules over all Elementals.

Fairies
Fairies are elementals who have incarnated into physical form, usually by pure chance. Examples include Pixies such as Ramiris in her "child" form, and Dryads such as Treyni and her sisters.

Demons & Angels
Although rarely talked about both Demons and Angels are species derived from Elementals, being Darkness and Light elementals respectively. What Separates them is the type of their existence, Demons are almost purely magical/demonic beings while angels are almost purely holy beings; unlike regular elementals which are usually purely "natural" (although half demonic elementals such as the corrupted Ramiris and Charys exist). This leads to a three way dynamic where regular Elementals are strong against Demons, Demons are strong against Angels, and Angels are strong against regular Elementals.

Chosen Heros
Chosen Hero's are individuals who have been chosen by either an elemental of light or an elemental of darkness and are blessed the Elemental Queen. They form a symbiotic relationship with their respective elemental and dedicate themselves to the betterment and protection of mankind.

Known Types
Elementals come in 8 different elements put into two different categories, The "Lesser" Elements of Space; Earth; Water; Wind; and Fire, as well as the "Greater" Elements of Light, Darkness, and Time. Although it is rare it's possible for Elementals to gain more than one element such as the Wind-Water Elemental Rimuru gave to Ryota Sekiguchi or Charys who gained the wind element from Veldoras influence.


 * Medium Elementals
 * Salamander - Fire
 * Beast Gnome - Earth


 * Greater Elementals
 * War Gnome - Earth
 * Undine - Water
 * Sylphide - Wind
 * Ifrit - Fire

Known Individuals (Including Fairies)

 * Alrose - Greater Elemental
 * Charys - Flare Lord
 * Claude - Greater Elemental
 * Delta - Dryad
 * Elmesia El-Ru Sarion - High Elf
 * Ramiris - Elemental Queen
 * Shizu - Greater Fire Elemental
 * Treyni - Dryad
 * Triss - Dryad
 * Trya - Dryad

Trivia

 * Despite having a racial advantage to demons, they have yet to win a single fight against demons in the series. In fact, all spirit VS demon battles ended in the spirit's instant defeat, because they were matched against ridiculously strong Primordial demons.