Oni
Dwelling in one of Avernus' more mountainous regions, the monstrous Oni are an odd study in savagery, civilisation, and excess constrained by necessity and enabled by monstrous strength. Their numbers may be small compared to many Avernite species, but their individual might more than makes up for it.
Accordingly, they are apparently one of the dominant forces within their region and according to Areatha one of the few peoples that venture far from their original location, some venturing through different zones and even onto the sea before either dying or returning back to the mountains with prizes from their travels to present to their lieges.
Biologically speaking Oni can be divided sharply into two distinct groups by their gender.
The more common Oni are the males who seem to be born more frequently compared to the females of the species. Although given their rather slow reproductive rates and long life spans this may just be the result of coincidence. Male oni tend to be humanoid blue and red skinned giants although some of their physical traits tend to be subject to change. For example, some Oni exhibit almost animalistic characteristics with tails and ears from great cats, scales, and wings, and others can appear almost human, if not for their height and skin tone, with almost infinite variety in-between.
The traits universal to all of them are a pair of horns that poke from their scalps and grow as they age. At a young age they are but mere nubs, but by the time they are in their hundreds they will be massive stately things that are lethal weapons in their own right. Apparently, these horns are an important status symbol in Oni society and many will have their horns decorated with descriptions of their glories and abilities.
Male Oni are not active psykers, instead their abilities are channelled inwards to give them access to a suite of unconscious abilities. The most obvious is their immense strength even in proportion to their size that lets them utilise their preferred clubs with devastating force to crush most opponents into dust. Second is based upon their stomach which contains an impossibly potent acid capable of breaking down any material the Oni can manage to fit down their gullet. Third the ability to incorporate the physical characteristics of materials the Oni has devoured. It must be noted that this is primarily the physical properties and not psychic ones and that the Oni seem to be unable to assimilate the psychic characteristics of living creatures. For example, should an Oni devour iron then its skin will take on the properties of that iron, while retaining the flexibility of its previous skin. By that same merit an oni can devour the carapace of a Titan Scorpion after killing it and gain its defensive capabilities and weight, but only that which is granted through physical means. They will also not change physically, for example they would not gain webbed feet via eating a swamp creature. The exact limits and mechanics of this ability are unclear even to the Oni themselves, while they have no problems devouring metals, poisons* and even more bizarre substances what part of the Oni is changed by their ability and there are strange exceptions to their habits such as specific crystals and dirt seemingly having no trigger upon their abilities. What elevates this ability beyond a simple if useful quirk is that as an Oni devours more and more creatures and substances it will begin to amalgamate these characteristics, improving their abilities over time as they consume. At their absolute strongest their heroes' skin will become harder than angel steel, yet as flexible as silk, their blood toxic enough to kill almost any foe while their strength grows enough to shatter mountains. More to the point these characteristics remain after death, so that Oni skin armour, Oni blood poisons, and Oni bone weapons are well regarded both by the Oni themselves and those they interact with.
Female Oni are almost the opposite of the males in terms of base traits. Although tall by human standards female Oni are considerably shorter and possess more human skin tones compared to the males and are what humans would call extremely attractive, similar to the Sirens. In fact this attraction seems to affect people regardless of species or gender. They are also possessed of the tapered ears compared to males rounded ones, the tapered style seeming to be relatively common among Avernite species. They too are possessed of a horn, in this case a single one, the length of which also indicates the age of the Oni in question although in their case it serves a somewhat more functional purpose.
Unlike their male counter parts, females are active psykers of great power. They have access to the ability to consume and assimilate materials which boosts their long term potential considerably, and the materials left over from their bodies can be turned into incredibly powerful force implements, but they also utilise two of their own disciplines.
The first seems to be more instinctive meteorological manipulation on a massive scale, but with great fine control compared to the Trust's methods. A single Oni witch is able to create meteorological effects miles in diameter with ease and bring down precise lightning bolts upon those that displease them as basic abilities. The reason for this disproportionate power seems to be in part due to their horn, which act as natural amplifiers for their abilities.
The second technique is known as Hellfire Smithing and is a comparatively recent development, and a power created by the Oni themselves. The legends of this technique say that a Queen was attempting to woo the affections of a beautiful Sakarian Prince and in the end he set her several tasks to complete. If she completed them successfully then he would be hers, and she completed all save for one. This final task was to create a ring that was as light as snow yet as warm as a comforting fire.** The story goes that no matter what she attempted there was no combination of materials that would function and she could never combine the two characteristics together without them destroying the other until wracked with despair she traveled and eventually came across something known as the Wine of Enlightenment, said to grant perfect clarity to any question or problem plaguing the drinker and the Queen guzzled it all in order to obtain her desire.*** So armed with the knowledge she returned, smithing together literal snow and fire to create her ring and the prince, overcome with its loveliness, submitted and acknowledged her as his Queen.
Whatever this story's basis in reality**** the Oni do have at least a semi instinctive understanding of metallurgy which when combined with Avernus' abundance of psychically active materials makes an impressive combination as Oni metalworks are prized outside of their regular areas due to their superb quality as weapons and force implements. The Hellfire Smithing itself appears to have been an attempt to combine their natural amalgamative abilities with outside sources to increase its utility. The witches and their few pupils***** claim they are creating a fire so hot it allows for the creation of objects that display properties that are usually impossible and even contradictory. For example, armor combining the strength of steel with the weight of aluminium. Its most infamous usage are "bounded" weapons where the Oni smiths together an item and the item's owner to improve the power of both.
Onis are typically organised into clans ranging in populations between the 100-1000 range as an average ruled by the female Oni with a Queen at the top of all of them. Larger clans do exist with the ruler of that clan being referred to as a High Queen. However, while there are only a small number of Oni, the number of other peoples collected by the traveling bands over the years is usually much higher. These people will deal with issues that the Oni either lack the skills in or are too uninterested in learning, instead lending their muscle and power to protecting these valuable workers and following their directives to construct buildings and terrace farms, grow crops, and all other necessities of civilisation.
As previously mentioned, Oni will range far and wide from their homeland in order to satisfy their needs. Specifically, Oni are gluttons. This is not usually out of need, but out of desire. While the males are usually satisfied with quantity, ingesting and indulging in vast amounts of liquor, food, and physical pleasures regardless of origin, the females desire quality as well as quantity. Most of their wandering is as a result of this, with specific needs of the clan often being happily intertwined. Usually a female will depart from the clan with their entourage of around 20 males and journey around the World, sampling exotic food and drink, hunting dangerous beasts, and meeting with the various Peoples that share the world with them, hiring out their services to the highest bidder in exchange for more of the above. Perhaps unsurprisingly the Idra'Sakar Empire (one of the largest unified concentrations of Peoples) is a frequent beneficiary of these bands. When the band finally grows bored of wondering or finds what it is looking for (and assuming it hasn't been killed) then it will return with its loot to the mountains and the clan. (Assuming that it too has not been killed in the meantime).
Perhaps most oddly, female Oni are known for being unique in that they will take lovers from Avernite peoples not of their own species to the point of building entire harems of skilled (and usually attractive) individuals. It must be noted that they do select for species with a familiar body plan and appearance to themselves or in other words similar to Eldar and Humans. This does mean that many avernite species are automatically excluded, but others like the Sakarians, Sirens, and probably other unknowns are most certainly are included. Likely humans as well.
With a limited pool of people to potentially interest the Queens comes with it traditions and even laws within the interseted groups and from the ONi themselves, laws which bare a high price for breaking. The Sakarians due to their close proximity with the Oni have probably the most detailed laws concerning Oni suitors, that basically boil down to a few major points. There must be no use of force upon the desired one, the desired one must be at leave to join with the Oni, and if either of the above laws are broken there will be consequences.
The Sakarians having one of the most advanced civilisations of people on Avernus and one with a great variety of people like the now rare Oslin and highly desirable Sakarians****** . With the various laws the Sakarians have created relations tend to be somewhat positive as individual bands tend to be net boons for areas, and those that choose to join the bands are allowed to retain contact with their places of origin, opening up contact and trade. However, very occasionally the Oni will do something that provokes reprisal, frequently by breaking the first two laws. The most extreme example of this happened nearly one thousand years ago and was the most recent major reprisal attack which was brought on by a Queen stealing a Sakarian Princess on her wedding night. An army was assembled and sent to retrieve her and punish the species as a warning to rein themselves in. While successful on the first count, the responsible tribe having been abandoned to their fate by their allies, the latter was almost a complete disaster. The responsible tribe had hidden in the mountains and by the time they had been tracked down the Oni in the area had prepared counter measures in case the army turned on them after rescuing the princess, a prediction that turned out to be accurate. After the Princess had been escorted from the mountains, the army attempted to attack one of the high queens, but instead was forced into retreat as a dozen Oni Queens combined their might and created a region-covering storm of such power that it was said "Lightning bolts fell like rain" all focused upon the Sakarian army. Faced with this level of prepared might and the threat of the Oni being able to unleash this over and over again the General decided to pull back and continue their service to the empire. At the end of the day the Oni are too powerful and secure in their mountain home for a simple reprisal action to do much to them. It is widely acknowledged by both sides that if the Sakarians ever decided to bring them down they likely would be able to, but only by calling on troops needed to defend farmland and cities, while also preventing attacks from more actively malevolent peoples such as the Termite empire, the Landuins and of course the wildlife that all Avernites face.
While the practise of wooing does produce issues for the Oni it does have a more practical side to it than simply being on the whims and personal pleasures of the Oni queens. Any being impressive enough for an Oni to consider wooing tends to be as a result of the person displaying some kind of skill that the Oni finds desireable. While the Queens are skilled, they cannot do everything, nor do they desire to. More than that their male counterparts often leave much to be desired intellectually. As such non Oni people, harem or no, tend to have positions of great importance within Clans because of this, applying their skills and talents in a variety of areas from agriculture to architecture, artistry to administration.
While these wanderings have also given the Oni a justified reputation as drunkards (when they down enough to get drunk), violent brigands, kidnappers, and deviants. Darker rumours also dog them, tales of cannibalism and even worship of one of the Gods of Chaos, although none will say the latter to an Oni's face and risk their wrath. But, it has also given them more positive reputations as passionate adventurers, steadfast friends to their allies, skilled craftsmen, and tellers of impressive tales.
In the end when push comes to shove the Oni prove that they are worth the trouble their presence brings, being able to turn hopeless battles between their witch queens' mystical might and the physical muscle of the males and their clubs. Most recently in the last Daemonic incursion it was only the intervention of an Oni Band known as the Sons of Rain that defended the gates of the city of Unquor from the Blood God's hordes, even from the personal attention of a Bloodthirster.
At current time the Oni seem content to continue their rather debauched ways, although there has been a drastic reorganisation as to how this happens as a new level of Government emerges, the Empress. This seemingly has come about by accident in recent years, due to a pair of incursions being relatively close together. Several Queens performed extremely well in these incursions and rose greatly in their power and mastery of their skills putting them on a level above their competition, while many of their rivals were killed by the daemons. With their new found power these Empresses stepped into the power vacuum of dead leaders to dominate and assimilate hundreds of tribes each and organised for their own desires. Possessed of appetites to match their glory each one of these Empresses have set their followers towards the construction of mighty palaces and kingdoms for them to rule and to go out into the world to bring them the finest luxuries as signs of tribute. And powerful they are with each Empress possessing riches nearly undreamed of from across Avernus - Euryale eyes, legendary Warp Root, millions of non-Oni servants supported by improved trade networks, vast harems, and even in one case a pacified and tamed Threnody Dragon.
These changes have been escalated by the growing advancement of the Sakarian Empire, with formalised trade starting to occur between the Empresses and the Sakarians, as opposed to the previously adhoc system of selling to small villages with contacts. This is especially valuable for both as the mountains the Oni reside in are filled with abundant natural resources, which the Oni turn into their prized equipment for export to various peoples, who provide them with additional food stuffs and other commodities that are harder for the Oni to obtain.
However, the growing power of the Empresses has clamped down upon the opportunities and power of smaller independent clans, to the point that a mass migration of non affiliated clans is becoming increasingly likely as time goes on. This itself is not unprecedented among Avernite species, even peoples have moved entire regions in the past like the Tzazars, but where they will go and if there will be any successful Oni colonies remains to be seen.
Speculation: It seems likely that similar to the Sirens the Oni are connected to the Eldar in some manner. When we mentioned the Oni to the Sirens, they referred to them as Mountain Kin (similar to how the Eldar were designated Star Kin). What the exact connection is unclear at this time. Perhaps they were originally created to model the unrestrained Eldar mental state?
*Death's Head venom remains a death sentence for Oni to consume, overwhelming their bodies' defences instantly.
**This is the most common variation, others claim she was asked to make a ring of light and dark, others a collar that was locked and unlocked. Universally it's two mutually incompatible extremes.
***The exact nature of this wine is also hotly debated. An alchemical or mystical creation is certainly possible on Avernus, but given the Oni's nature the chances of her just getting outrageously drunk and having an epiphany under the influence is not completely outside of the realm of possibility. Study of the Ircha'nota, the legendary forge hidden within the bowls of Valshartha, the Sakarian royal palace, has also been offered as explanation.
****Areatha said that she did know the Queen the tale was about and that she did leave to go on her own when unable to complete that task...but whether she did actually find some mystical booze or just found enough to overcome her inherent resistance she also did not know. She says she was distracted at the time by some kind of termite migration crisis.
*****Hellfire Smithing is a skill the Oni are capable of teaching to others, but rarely do they offer to impart the knowledge without great payment, but in a strange way most seem to overthink how difficult being offered to learn is. Often enough making pilgrimage to a Queen alone and asking has been enough for them to teach it. The fundamental point is that one must impress the Oni. Of course the technique is by no means simple to learn.
******Sakarians ares especially valued likely due to their frequently trained social alluring powers and valuable skills (often administrative and diplomatic.)
Damn this came far from my original sleepy inspiration.
Massive thanks to
@MonkeyTypewriter,
@random_npc and
@Andres110 for betaing this piece and of course
@Durin for looking it over once it had been done.
And finally tagging
@Durin