Demon Lord

''This article is about the highest possible evolution of Monsters. For the Council of Demon Lords, see Octagram. For the Race of Spiritual Lifeforms, see Daemon Lord''

Demon Lord (魔王) is a term used in two different fashions, either as a Monster class or as a social position. In general, it refers to the strongest or highest-ranking among Monsters, however, that is not an absolute rule.

Demon Lord Seed
Demon Lord Seed (魔王種) refers to Monsters who have the base necessary qualifications to be able to undergo the Harvest Festival. In terms of pure Magicules alone, they are at least Special A, with an EP of at least 200,000 being required as one of the qualifications.

Typically, the World Language will announce the obtaining of a Demon Lord Seed and the individual will undergo some form of evolution. For others, it would appear that neither evolution nor announcement occurs, though they are still Demon Lord Seeds regardless.

Harvest Festival
The Harvest Festival (魔王ヘの進化) occurs once all the requirements to evolve are met by an individual bearing the seed. The World Language will announce it and the Festival will start immediately. The process cannot be stopped even by the one who triggered the event in the first place once its started.

During the Harvest Festival, the one ascending undergoes a transformation in which they can physically and racially evolve and gain a tremendous amount of Magicules, though the exact amount may vary depending on the individual.

Additionally, those connected to the ascended by soul bonds will also receive "gifts" in the form of Magicules, new and evolved Skills, and potentially evolution.

True Demon Lord
True Demon Lord (真なる魔王) or Awakened Demon Lord (覚醒魔王) is one of the ultimate forms of existence that Monsters can attain, only below True Dragons.

When used by World Language, the title Demon Lord always refers to True Demon Lords, while Demon Lord Seeds are clearly referred to by the World Language as "Demon Lord Seeds". The only reason the term "True Demon Lord" even exists is to distinguish them from Demon Lord Seeds more clearly.

Notable True Demon Lords
Those who are known to be True Demon Lords by the time of Rumbling of Heaven and Earth.

Artificially Awakened Demon Lord
Ciel developed a method to artificially awaken qualified candidates into beings similar to True Demon Lords by using Beelzebuth and ten times the amount of souls needed for a Demon Lord Seed to awaken.

Notable Artificially Awakened Demon Lords
Those who are known to have been artificially awakened.

Self-Proclaimed Demon Lord
Self-proclaimed Demon Lord (自称の魔王) refers to any individual that proclaims themselves as such. There are no restrictions to this and even non-monsters can claim to be Demon Lords. However, this usually has grave consequences depending on the individual's strength.

If the Lord in question is only at the level of a high-level Majin or even only at Hazard-class, one of the officially recognized Demon Lords will quickly destroy them by either sending their own subordinates to deal with it or attacking themselves, swiftly eliminating the self-proclaimed Demon Lord. Alternatively, the Lord might even die to armies or adventurers sent from the humans before the Demon Lords act.

However, if the individual in question is truly at Demon Lord-level (Seed or True Demon Lord), then they might be able to fend off or even kill the attacker. If that occurs, rather than being enraged at the newcomer, the other Demon Lords will instead usually view this as a display of strength and invite the newcomer to take the place of the attacker as an official Demon Lord.

There are no concrete examples of self-proclaimed Demon Lords that have been killed. However, two known Demon Lords became recognized through killing their attackers - Leon Cromwell, who killed Kazalim 200 years before Rimuru reincarnated, and Rimuru Tempest, who killed Clayman at the Walpurgis Banquet. In both cases, the Demon Lord Council recognized their strength, allowing them to use the title of Demon Lord and join the Council.

Regardless of the result, nobody remains a self-proclaimed Demon Lord for long.

Recognized Demon Lord
Recognized Demon Lord (認められの魔王) refers to self-proclaimed Demon Lords who have been officially recognized by the established Demon Lords. This can be achieved in two different ways:
 * 1) Getting nominated by other Demon Lords to join their ranks and receiving majority approval.
 * 2) Self-proclaiming to be a Demon Lord and then proving one's strength by defeating a recognized Lord.

Once a Demon Lord is recognized, that Lord also becomes a member of the Demon Lord Council and can vote on issues brought up by the council.

Demon Lord Council
Founded by Guy Crimson, the Demon Lord council is an organization containing all the recognized Demon Lords. The number of members and the name of the council has changed multiple times throughout the council's history, but at some point the maximum number of members was capped at ten and the name "Ten Great Demon Lords" was established. However, the organization was again restructured during a Walpurgis Banquet, and the resulting organization was labeled as Octagram by the "newbie" Rimuru Tempest due to only having eight members.

The only condition required to join the council is to become a recognized Demon Lord. Anyone who joins is automatically considered at least Disaster-class by humanity just for being a recognized member of the Demon Lord council, regardless of actual power. However, it's nigh impossible for anyone other than Lamrys to join the council without being at least at Demon Lord-level of power. After the restructuring, the Octagram has even higher standards since every member is already at least at the level of a True Demon Lord in power.

Ancient Demon Lord
Among the Demon Lords that are part of the Demon Lord Council exist "generations" of Demon Lords, with the ones that were its very first members having the title Ancient Demon Lord.

Trivia

 * The Walpurgis Banquet is effectively a glorified tea party according to its members. However, because of the immense power and reputation of those attending, most of humanity views a Banquet as a bad omen for the future.

pt-br:Lorde Demônio Владыка демонов

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