Ontos are the evolved descendants of an artificial demon species, the pedre-ontos. Though the pedre-ontos were a failure from the point of view of their creator, their adaptability enabled them to survive and prosper. Ontos are looked down upon by natural demon species for being ‘fake’. Most created species are made for a specific purpose and then die out once they are no longer needed. The ontos’ tenacity and success is seen as an aberration.
Most ontos are mixed with something else, as a result of the pedre-ontos interbreeding with other species as they spread and evolved. (Silrathus and her family are part minotaur, for example. Krog (and therefore Murgatranthes) has some harpy in their family tree.) There are few ‘pure’ ontos remaining - such a being would be a pedre-ontos.
Ontos are demons of thunder, and each one has a secondary element too. Most of them don’t get great distance with their magical attacks and prefer to fight by using their elemental attacks at close range to supplement their physical attacks.
Ontos usually live to 1,200 (Earth years). If an ontos is very powerful, they may undergo metamorphosis at the age of around 1,000, and assume a more powerful form known as an elder. An individual who becomes an elder (probably 2% of the population) will probably live to around 1,400. In theory, an ontos who lives long enough will metamorphose again into a third form, which is what the created pedre-ontos were supposed to have been all along. This has yet to actually happen.
Ontos are quite gentle as demons go. They’ll enjoy messing with an unprepared summoner but are unlikely to do anything cruel or twisted to you. They are also surprisingly adept at learning to use human technology. However, they are not widely employed by summoners as they are seen as a demon for low-level magicians, and they can be quite temperamental. They expect to be fussed over and praised a lot and may get stroppy and break stuff if they aren’t, which can be very taxing on a summoner’s patience. There is also the fact that many other demons look down on ontos, and by extension will be less likely to work with a summoner who employs them. On the other hand, ontos can be very loyal to their summoners, as they don’t have many allies.
Ontos have five sexes (known as enig, thed, seml, bren, and obon). They don’t have genders as such, because they have 0 sexual polymorphism. There are some stereotypes about how each sex behaves, but this is viewed more along the lines of our horoscopes (everybody thinks it’s bollocks but some people have fun with it anyway). Ontos accept that they will probably get labelled as either male or female by non-ontos, and most of them just go along with it and don’t really care.
Ontos are good at making underwear. At least 40% of underwear in the demon world is of ontos manufacture.
Bonus: ontos eggs