Demons

Demons are the residents of the third strata. The name "Demon" is not something they were given but was rather determined by the system.

All demons are capable magic users since birth and are generally resistant to fire, including blue flame. They can be divided into 2 groups: lower and higher demons. The former includes all tier 1-5 demons. These demons are basically brainless, violent monsters who are even more bloodthirsty than your average beast. They can even skip eating the biomass from their kills just to continue fighting and satisfy their bloodlust. Once the demons reach tier 6 they begin to take on aspects (e.g., envy, ignorance, pride, ...) and enter the group of higher demons. Unlike their weaker counterparts, these demons are fully in control of their instincts, have sapient levels of intelligence and even formed their own society! It is said the demons cities are ruled from far below in the Dungeon by the ancient known as Arconidem, the Demon God.

"The less intelligent monsters may pose less of a threat than their smarter... colleagues... but the motivations of both are similar: kill, eat and grow stronger.

''It's only the natives of the third strata, to my knowledge, that seem to enjoy what they do, even go out of their way to inflict pain, fear or terror in their victims. There have been numerous witnesses to testify that the demons will act like this even when preying on each other. And each demon will attempt to indulge itself according to their nature as described by their species. Wrath demons engage in horrific displays of anger and rage against those who they see have wronged them, Greed demons will go to absurd lengths to collect and accumulate that which they desire whilst delighting in the pain inflicted, Envy demons are known to strip everything from their foes, reducing them to literally nothing before dealing the final blow."''

- Teacher Sooka of the Tempest Alliance from "On the Nature of Demons"

Demons Nature
The nature of demons is to be uncooperative as theorized as this itself is what works to grow their community. Much in the same way that insects cooperate and that bears hibernate, this method of internal conflict is one that is suited to their society in growing out the most exceptional members without a moments rest. This theory is not widely shared but appears to be the most promising as proposed by Axelgesis.