Beast (ビースト, Bīsuto?) is an Extra Servant Class populated by entities classified among the Evils of Humanity (人類悪, Jinrui Aku?)—the common designation for the Beasts of Disaster (災害の獣, Saigai no Kemono?). The Grand Servants are summoned forth as fail-safes to counteract the Evils of Humanity.
Qualification and manifestation
Beast Candidates (ビースト候補?) possess some level of Authority of the Beast even before manifestation, which allowed the records of Evil of Humanity Kiara Sessyoin to persist even after the imaginary numbers phenomenon made it so the Kiara incident on the Far Side of the Moon Cell never occurred.
Tamamo Vitch seeks Beast's Crown during the Human Order Revision incident. Despite being of a status to warrant the summoning of Grand Archer in the Atlantic Lostbelt, she is still in a stage of infancy in which she has not acquired the full Saint Graph of a Beast or a number.
The Fantasy Trees possess within them a ritual to allow the Alien God to descend and grant the status of Beast. This ritual allows for the framework to be used by others, Ashiya Douman initially planning to ascend Ibuki-douji to the position. After deciding to take it himself, he uses his Hell Realm Mandala containing the power of five Heroic Spirits and three Divine Spirits in an attempt to ascend to the position of Beast, but it fails to manifest. Abe no Seimei reveals to him, despite the gods he consumed, that he without love for humanity has no qualification to ascend to the position of an Evil of Humanity and Beast.
Once a Beast appears in a world, they will manifest in a chain-reaction like manner, one Evil of Humanity bringing other calamities that eventually culminate in "The Final Evil" appearing. Gilgamesh says Beast I Goetia manifesting means Beast VII is somewhere within the world as well. Demon Gods work in the same manner, acting as a trigger for Beasts so long as someone witnesses and confronts them. The manifestation of Beasts is seen as a trigger for the end of the world on occasion during Atlas' calculations in predicting and avoiding the end of the world.
Each Beast possesses a different Beast's Crown (獣冠, Jyūkan?) in the form of their horns. Beast III/L in particular has two forms of her Crown: one of stone, that eventually cracks to reveal a crown of light.
L and R
Some of the Beasts are split into two halves, each possessing paired "antithesis" concepts. They are "Left and Right", "black and white," and "yin and yang," each unable to coexist with the other. These halves are called L and R. In the case of Beast III, they also stand for Lapse and Rapture.
If one half is to manifest, the other will manifest in due time. While Beast III/L asks Beast III/R if she seeks to devour her to become whole as a complete body, Beast III/R says that is impossible. Though both born from the same sin, they are both completely opposed. They are not two halves to be joined, but two enemies that are diametrically opposed.
The Beast class has unique Class Skills, but each individual Beast possesses Class Skills unique to themselves as well. In the case of Goetia, he possesses Caster Class Skills, while the normal Beast Class Skills are listed as Personal Skills.
- Independent Manifestation is a capacity that permits the unrestricted projection and materialization of the soul, permitting the skillholder to freely manifest within a time period and location of one's choosing. Being that the skillholder's soul fundamentally exists in a place beyond the boundaries of life and death and the limits of the History of Humanity, time travel may be enacted at will; and the projected flesh is in essence an immortal puppet controlled by the skillholder's consciousness. In the Final Singularity of Fate/Grand Order, Chloe von Einzbern implies that the Independent Manifestation exhibited by Goetia's Demon God Pillars is a mockery and inferior use of the Third Magic. While fundamentally unique to Beasts, Shiki Ryougi, Merlin, and Tamamo Vitch possess it. Shiki's case is unexplained, only noting it is normally restricted. Merlin is able to grant it to himself. Tamamo Vitch is in the process of becoming a Beast and can manifest as one for a limited time. Gilgamesh is able to utilize it in the Moon Cell through unique circumstances.
- Authority of the Beast is an Anti-Human Skill that enhances the skillholder's capacity to harm existences that are classified as Humans. In the specific case of Tiamat, it is stated that access to such a Skill is held by right of standing as the Sea of Life (生命の海, Seimei no Umi?, localized as "Primordial Sea") itself—being essentially a Divine Authority (権能, Kennō?) to destroy what one has birthed. It is likely that the Skill as held by the other Evils of Humanity is justified by alternative means. Again by the example of Tiamat, the Authority of Beasts is apparently communicable to other entities per the will of the skillholder.
- Nega skills are possessed by each Beast, unique to each one.
|I||Goetia||Grand Order||None||Nega-Summon||Pity (憐憫, renbin?)|
|II||Tiamat||Grand Order||None||Nega-Genesis||Regression (回帰, kaiki?)|
|III/L||Kama/Mara||Grand Order||None||Nega-Desire||Pleasure (快楽, kairaku?)|
Depravity (堕落, daraku?)
|III/R||Heaven's Hole||Grand Order||None||Nega-Saver||Pleasure (快楽, kairaku?)|
Lust (愛欲, aiyoku?)
|IV||Cath Palug||Grand Order||None||Unknown||Comparison (比較, hikaku?)|
|VI/?||Beast of 666||Second Holy Grail War||Manaka Sajyou||Nega-Messiah?||Unknown|
|VII||U-Olga Marie||Grand Order||None||Unknown||Unknown|
|Unknown||Unknown||Grand Order||None||Unknown||Shame (慚愧, Zanki?)|
|Unknown||Tamamo Vitch||Grand Order||None||Nega-Weapon||Treasuring (愛玩, aigan?)|
Entities that display the Beast classification due to being considered part of a Beast.
|Demon Gods||Beast I|
|Bel Lahmu||Beast II|
|Ushiwakamaru (Chaos Tide)||Beast II|
|Musashibou Benkei (Chaos Tide)||Beast II|
|Angra Mainyu||Not achieved||Naturally an Evil of Humanity with the trait of Retribution, Angra Mainyu could become a Beast through manifestation from the Greater Grail and uniting with host Sakura Matou. Grand Servants would respond by the time half the world was submerged in Holy Grail Mud.|
|Kiara Sessyoin||Achieved as Beast III/R||Qualified in the world of Fate/Extra CCC, but did not become one until merging with her alternate self due to the machinations of Zepar.|
Evils of Humanity
Those mentioned as Evils of Humanity without having yet been designated as a Beast.
|Amaterasu||Self-described as an Evil of Humanity.|
|BB||Gilgamesh describes BB as a completely new Evil of Humanity (まったく新しい人類悪, mattaku atarashii jinrui-aku?). When faced in battle in Fate/Grand Order, the "Advent Beast" display that appears before battling a Beast appears briefly, but it is obscured by other effects.|
|Manaka Sajyou||In Take Off! Super Dimensional Trouble Hanafuda Epic Battle (とびたて! 超時空トラぶる花札大作戦, Tobitate! Chōjikū toraburu hanafuda daisakusen?), Tamamo calls Manaka Sajyou a Natural-born Evil of Humanity (生粋の人類悪, Kissui no Jinrui Aku?).|
 Fate/Grand Order - Babylonia: The Absolute Frontline in the War Against the Demonic Beasts - Section 16: Demise
Gilgamesh: Now, Merlin truly did say Evil of Humanity?
Mashu: Yes he did. He said the King of Magic awoke one of the seven evils of humanity. Excuse me, King Gilgamesh, but what are the evils of humanity?
Gilgamesh: What, you have yet to know? I thought you already found the answer in your quest. The evils of humanity are blights of humanity, they refer to the many disasters that would destroy humanity. They become stronger the more humanity develops, like a cancer eating its society from the inside. It’s backwater resting in human history, to be frank.
Da Vinci: Do you mean something looking for vengeance like the Gorgon? Something that will destroy humanity with enmity?
Gilgamesh: It’s the opposite, o fair creature. The evils of humanity are not the evils that will destroy humanity. They are the evils that humanity will destroy.
Mashu: The evils that humanity will destroy?
Gilgamesh: Yes, hm. You should ask the explanation for that from the one appropriate for it. For now, just remember that they are disasters that threaten human history: the self-extinction mechanisms and safety devices of humanity that were the basis for the heroic spirit summoning. The seven evils of humanities. They too manifest as spiritual foundations, as seven disasters born by the beastliness of humanity. In other words, Class Beast. What the King of Magic awoke was such a beast.
Ishtar: Hold on. The primordial sea should be Mother. Isn’t this anomaly being caused by the goddess Tiamat?
Gilgamesh: Fool. I said Tiamat is the Beast. The foe we face is a legitimate and true god of primordial earth.
 Fate/Grand Order, 7th Singularity, Chapter 16 - Gilgamesh on the Evils of Humanity (Alternate Annotated Translation)
I see. So Merlin has gone on ahead, then.
Without coming to know defeat in the waking realm, he has been crushed within the depths of the dreaming.
Truly an end befitting of him.
Still, the Evils of Humanity (人類悪, Jinrui-Aku?) -- Merlin did indeed speak of such, you say?
Yes. He said that the King of Thaumaturgy (魔術王, Majutsu-Ō?) has to this land called to awakening one among the Seven Evils of Humanity (七つの人類悪, Nanatsu no Jinrui-Aku?).
... er, Lord Gilgamesh.
What precisely are the Evils of Humanity?
What are the Seven?
What, you're unfamiliar with them?
I would've thought that you'd already come across the answer to that in your investigations.
The Evils of Humanity are, as the name implies, the Stigmata of Humanity (人類の汚点, Jinrui no Oten?) -- the various Calamities (災害, saigai?) positioned to enact the annihilation of Humanity.
They accumulate strength in proportion to the advancement of humans, and are in essence as a cancer that consumes society from within.
To rephrase, they are as a stagnation (淀, yodo?) within the current of the History of Humanity (人類史, Jinrui-Shi?).
@ da Vinci
Avengers (復讐者, fukushūsha?) in the cast of Gorgon, you mean?
That is to say, existences that out of enmity seek the destruction of Humanity?
It is the reverse, O fair one.
The Evils of Humanity are not the Evils by which Humanity comes to destruction.
Rather, they are the Evils that Humanity shall come to destroy.
The Evils that ... Humanity shall come to destroy?
Indeed. ... hm.
It would be best if the explanation thereon is left to someone more appropriate.
For now, commit this to memory, for such are the Calamities that threaten the History of Humanity.
They are the archetype upon which the Summoning of the Heroic Spirits (英霊召喚, Eirei Shōkan?) is founded -- at once a fail-safe (安全装置, anzen sōchi?) and a system by which the Apoptosis of Humanity is enacted (人類の自滅機構, Jinrui no Jimetsu Kikō?, lit. "System for the Apoptosis of Humanity).
The Seven Evils of Humanity. They too exist and manifest (顕現, Kengen?) as Saint Graphs (霊基, Reiki?, lit. "Spiritual Foundations").
They are the Seven Calamities born of the animalistic qualities inherent to humans (人間の獣性, ningen no jūsei?, lit. "the Beastial Nature of Humanity") --
thus, Class Beast.
That which the King of Magecraft has awakened is such a creature.
But, wait. Should not the Primordial Sea (原初の海, Gensho no Umi?) refer to Mother?
Should this aberration not be of the hand of the Matriarch of the Gods?
The acts of the Goddess Tiamat?
Fool. I am telling you now that the Goddess Tiamat is one amongst the Beasts.
The opponent that we challenge now is authentically a Divine Corpus (神体, Shintai?, lit. "Divine Flesh") of the Primordial World (原始世界, Genshi Sekai?).
Class Beast ... The Seven Evils of Humanity ...
Is that the name of our Enemy?
Indeed. That is the term for the Beasts of Calamity (災害の獣, Saigai no Kemono?, localized as "Beasts of Disaster") in collective.
- BAMBOO BROOM 5/12/17
- Fate/Grand Order: Cosmos in the Lostbelt - Olympus: Interstellar Mountain City, Section 11: Investigation/Encounter/Cherish
- Fate/Grand Order: Cosmos in the Lostbelt - Hell Realm Mandala, Heiankyo - Flash of Roaring Thunder, Section 14: Rasetsu-Ō・Cranial Eboshi Ashiya Dōman
- Cite error: Invalid
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- Fate/Grand Order Arcade - Halphas profile
- Fate/Grand Order - Tokugawa Restoration Labyrinth Ooku - Act 8: The End of Tokugawa
- Fate/Grand Order material VIII - Beast III/L Servant Profile translated by Konchew
 Fate/Grand Order - Solomon: The Grand Time Temple - Section 9: X/Andromalius, the Trash Heap
Illya: Over here, Kuro! That pillar -- it's replicating like crazy! What is that thing, Ruby? It's like super gross!
Ruby: Uh -- something that modern humans would probably have a bit of trouble dealing with? As far as the Spell Format goes ... looks like a mess of Age of Divinities bullshit. I guarantee that if you go at it, you're gonna have a bad time, 'cause it'll keep on resurrecting no matter how many times you take it down. Do you seriously intend to fight it, Illya-san?
Illya: Of course I do! It's only common sense that we'd fight alongside everyone else! I mean, we became friends with Master-san specifically to help her! This is the reason that we joined Chaldea in the first place!
Chloe: That's right. While I'm not exactly happy about pulling an all-nighter, I've made a promise to return the favors that I owe. Normally it'd be Mahou Shoujo-istically NG to go up against a tentacle monster, but -- well, I guess it's worth it for just the opportunity to cut 'em down? Especially since it somehow feels like these guys are lookin' down on the 3rd Magic. -- Let's go Illya. Even if it's just an inkling, let's show them the true power of the House Einzbern!
Fate/stay night Heaven's Feel III. spring song Q&A [T]
Q: In HF, Angra Mainyu is mentioned as All Evils of Humanity, is it the same as that Evil of Humanity Gilgamesh mention in UBW? If he is born, will a Grand Servant be summoned?
Nasu: Angra Mainyu who is fully enfleshed with the Fuyuki Grail is an Evil of Humanity. Angra's Evil of Humanity is Retribution (報復?). If his enflashed body fuses with Sakura, he would have become a Beast. At that time, half of the world would be polluted and a Grand will appear.
Takeuchi: This will be told in Rebuild of Heaven' Feel new edition!
 Fate/EXTRA CCC - Tamamo-no-Mae - Secret Garden #3 Event Conversation
But hear Us. Good and Evil; Lawfulness and Chaos; Great and Meager; Perpetrator and Victim. Such dichotomies as these are of no relevance to Us.
We exist as an Evil of Humanity that is merely extant, just so as the Divinities are merely extant as configurations of temporal circumstance and phenomena.
That which we desire to harvest are the fruits of Ideation alone. But be that they come of prayers for peace or the hatred accumulated of war, the thoughts of Men are equal in Heat.
In those eras where peace is valued, let that Men may prosper; that they are cultivated, such that we might harvest their faith.
In those eras where war is valued, let that Men be driven; that they are slaughtered, such that we might harvest their enmity.
Do you come now to comprehend? The benevolence and malice borne by a Divinity necessarily conforms with the will of Men, and with the conditions of an era. Therefore --
So too shall the one that you love change with the passage of time. Irrelevant of your devotions, she shall come one day to bare her fangs against Humanity.
Can your love for that Tail be unfaltering even so? Can it endure that a Monstrosity lurks everpresent within her shadow, beckoning uncertain Calamity?
だが聞け。 善と悪。法と無法。 強者と弱者。加害者と被害者。そのような理由に妾は関与せぬ。
妾たちが集めるものは想念のみ。 平和への祈りも、殺し合いの憎しみも、 想いとして熱量は変わらぬ。
理解したかえ？ 神の善悪は時代と人間が決めるもの。 然るに―――
おまえが愛するアレも、時代によって 変貌する。おまえの愛とは関係なく、 人を殺す悪鬼となる。
それでも貴様はあの一尾を愛するのか？ いつ怪物になるか分からぬ、 いつ破滅を呼ぶか分からぬ災害を？
 Fate/EXTRA CCC - Chapter 7: I love You - Gilgamesh
That beauty is the beauty of a machine. There’s not a single sign of life here. Every element of this place rejects life. I have seen many disasters and much of mankind’s evil. Even those you would consider evil originally held some feeling toward humanity. It might be a benevolence turned only on themselves, or a hatred toward others, of course. But this is different. This darkness is human, in a sense, but it is also a cosmos that rejects everything, holding no human emotions. A wholly new “human evil” surpassing all the evils of this world.
その美しさは、機械としての美しさだ。 ここには生命の息吹が一切ない。 あらゆる要素が生命活動を否定している。
我は多くの災害と人悪を見定めてきた。 貴様らにとって悪とされるモノたちも、 根本には人間への情があった。
それが自己にのみ向けられた博愛であれ、 他者に向けた憎悪であれな。 だが、これは違う。
この闇は人間的でありながら、人間としての 情を持たぬ排斥の宇宙。この世すべての悪を 上回る、まったく新しい"人類悪"だ。
- Take Off! Super Dimensional Trouble Hanafuda Epic Battle - Fate/EXTRA Arc.