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Fiends (sometimes translated as "Demons" or "Dark Lords") are creatures conceived by one of the Gods to be the most powerful beings in the mortal realm, with the Archfiend at the top of the pyramid of power. Unlike with the Archfiend however, their personality doesn't suffer any direct change as a consequence of the transformation itself.

These extremely powerful entities are created out of ordinary creatures by consuming the blood of the Archfiend. The process of turning into a Fiend may or may not alter its appearance. There are cases of drastic transformations while there's other cases of creatures not going through any change at all, and there is no common physical traits to visually identify them, to the point some Fiends look roughly the same as a member of their original race.

At any given time, only 24 Fiends (not including the Archfiend) may exist, and female Fiends are infertile to ensure that this number never goes up. If a Archfiend wishes to make more Fiends, it must kill off some of the existing Fiends to make space. This limitation in numbers was placed by the Gods to avoid the forces of the Monster Realm to grow so powerful that the conflict with the Protagonist Race devolves into a boring slaughter fest. Male Fiends are capable of impregnating other living beings, but this is an exceedingly rare occurrence and the child born from the copulation is not a Fiend but an empowered member of the mother's race.

Additionally, Fiends do not age, and unlike the Archfiends, who only get their powers for 1000 years each, an ordinary Fiend would remain a Fiend indefinitely. They can be killed but this is typically an extremely difficult task, as they are the most powerful living beings in the world after the Archfiend.

Despite the scary name, not all Fiends are destructive or evil, in fact, quite a number of them are capable of compassion and sympathy, while some are completely apathetic or have no interest in violence. Even though the Archfiend is a savage and vicious monster with nothing but hate for the Protagonist Race and Fiends are forced to obey his/her orders, that doesn't mean they have any personal dislike for humans or such, and quite a number of them are willing to help people in need, though some of them are highly destructive and/or sadistic. Overall, the actions and personality of Fiends are largely dependent of each individual member. Fiends are largely infamous and feared among humans, and all of them are in their history books and studied by the common citizens, to the point that most of them can be individually identified by those that are well-informed.


Those who become Fiends have their maximum potential increased exponentially. They are immensely powerful and even the weakest Fiends are on par with the strongest humans in history. They typically have either extreme physical or magical power (sometimes both), and they tend to have several unique and powerful abilities of their own.

Furthermore, all Fiends are covered by an Invincibility Field 100% of the time, protecting them from harm by ordinary means. No matter how strong an attack is, if the Invincibility Field is not broken first, the Fiend won't receive a single scratch. Currently, only the following may dispel or ignore the invincibility field to harm or kill a Fiend:

Additionally, even if the Invincibility Field was pierced, Fiends are extremely durable creatures. They can easily take wounds that would be mortal for other living beings and they have high regenerative properties, allowing them to recover in faster periods of time than humans do. Usually, it is unthinkable for a human besides the Hero to even dare face a Fiend in a 1 on 1 combat, even for skilled and experienced warriors. Defeating a single Fiend is usually a very challenging encounter that requires a large group conformed by several extremely talented people, and that's assuming at least one of them has Nikkou or Chaos in their possession.

Powerful Magic Seals can seal a Fiend for a long period of time and is the safest way for humans to deal with Fiends. Magic by the mortals cannot directly harm or damage the Fiends, but it can isolate them in a secluded field. Some rare magic items may be able to temporarily restrict a Fiend as well. However, these methods usually work only on the weakest Fiends, as any moderately powerful is perfectly capable of rendering these mechanisms useless.


A Demonic Blood Soul.

In the odd case that a Fiend is successfully slain, instead of simply dying, it turns into a glowing red pearl called Demonic Blood Soul. This crystallized gem is a Fiend's last mechanism for survival. If the Blood Soul is merely left alone, the Fiend will eventually be resurrected naturally, though the process takes several centuries and the period of time seems to vary depending on each Fiend. The Blood Soul can also be consumed by another living being. When this happens, there are two possible outcomes. 

  • The Creature will overcome the will of the previous Fiend and become one himself, effectively replacing the previous one in the process.
  • The self of the original Fiend will take over and resurrect immediately, and the individual that consumed the Blood Soul will simply disappear.

The Archfiend can also re-absorb the blood soul back into the his/her body and it's the only way to permanently erase a Demonic Blood Soul. The safest way for humans to deal with them is by sealing them with powerful Magic, preventing it from reviving through natural means.


Due to the powers of the Archfiend in their blood, Fiends are unable to disobey the Archfiend. Even if the Archfiend who created the Fiend dies, the Fiend would still be absolutely obedient to the new Archfiend.

Directly beneath the Archfiend is the Supreme Dark Lord, a single individual that is elevated to a higher status by the Archfiend. The current Supreme Fiend is Hornet.

Beneath the Supreme Fiend are the Four Elite, four Fiends that are older, more powerful and more experienced than most of the other Fiends. The current members of the Four Elite are KayblisKesselringSilky and Kamilla.

Fiends can also form and command a Demon Army, usually to attack large human countries, as they have absolute command over Monsters.


Similar to how a Archfiend may use its blood to create Fiends, a Fiend may give its blood to other creatures and create Apostles. There is no limit as to how many Apostles a Fiend may create, but the Fiends' power gets spread thinner as the number of its Apostles increases. Also, the more Apostles a Fiend creates, the weaker the control the Fiend has over them.

Like the Fiends, Apostles are immortal and have no limit on life span. However, they do not have the invincibility field and can be killed by normal means. The demands of their master are absolute to them, and they cannot disobey. If the Fiend dies and the Blood Soul is consumed by another being, the authority of the Apostle moves along to the new Demon. In the event of the Blood Soul being re-absorbed by the Archfiend, any remaining apostles will retain their unlimited life span and other apostle characteristics, but will no longer be bound to any Fiend.

There is also another subset of apostles referred to as the Lesser Apostle. They are being that are not actually bound by the sharing of blood, but rather, a servant loyal simply by an oath of loyalty. They don't have any special ability for it.



The leaders of the Factions, Kayblis and Hornet.

Currently, for the first time in their history, Fiends are in a civil war. There are two factions of Fiends in conflict with each other. Since the death of Archfiend Gai, the Fiends were split in two over how to deal with Little Princess Miki not desiring to rule as the new Archfiend

Hornet, daughter of Gai, leads the faction to follow the wishes of her father and bring peace to the conflict between human kind and the Fiends with Miki as the ruler.

Kayblis, the oldest and most powerful Fiend of all, desires to kill Miki and become the new Archfiend himself. Majority of Fiends sided with Kayblis and joined his faction.

The Hornet Faction has contacted Miki and Kentarou many times, even befriending them. Protecting the Little Princess from Kayblis' assailants is their highest priority.

Despite the fact the Kayblis Faction is immensely larger in size and power, it has conflicts within itself. Many of the Fiends follow Kayblis only due to common interest, and in fact despise Kayblis and his ways. 

Both Factions also have thousands of monsters that sided with each faction depending on their individuals opinion on the matter.

List of Fiends[]

(𝓗) Hornet Faction. (𝓚) Kayblis Faction. (|) Unaffiliated.
(*) Part 2 contains major spoilers for Rance X.