Beast

Beast (ビースト) is a non-standard Servant class populated by the seven entities classified among the Evils of Man (人類悪) -- the common designation for the Beasts of Calamity (災害の獣).    It is for the purpose of acting as a fail-safe by which to counteract the Evils of Man that the Grand Classes (グランドクラス) are summoned forth.

Overview
The Evils of Man are, as the name implies, the Stigmata of Humanity (人類の汚点) -- the seven Calamities (災害) positioned to enact the annihilation of Man that threatens the continuity of the history of Man. Being entities that obtain standing within the World of the Primates (霊長の世) by way of factors that grow forth from human society and the Common Sense of Man (人理), the Evils of Man are existences that accumulate strength in proportion to the advancement of Man, and are in essence a cancer that consumes Humankind (人類種) from within. Empowered by civilization itself, they are beings that consume civilization -- the embodiment of the destruction visited upon the works of Man.

Rather than Servants brought forth via the evocations of spells founded upon the Combat Ritual For the Salvation of the World -- "the Summoning of the Heroic Spirits" (英霊召喚) -- the Beasts are the original beings that came to accumulate spiritual stature (霊格) as Saint Graphs (霊基) ; the basis and archetype of the Heroic Spirits, which by the causality of self-inflicted karma come to act as a system for the of Man (人類の機構). That is to say, the exceptional nature or capabilities that Heroic Spirits exhibit when summoned as Servants are justified upon the same mechanisms that lend the Evils of Man their capacity for threat.

Though the Beasts can be said to preside over the Seven Sins of Humanity (人類の七罪), the sins that they represent are not upon the death of. Rather, these "sins" come of the attributes that humans embody in existing as humans; those things that cannot be set aside so long as humans continue to subsist as creatures who possess wisdom. Being existences that encompass all of humanity, the Evils cannot be withstood or overcome by any one human, or anything beholden to the laws of the Human Order; for just as Humanity is incapable of abandoning Wisdom, so too are the Evils an inevitable fixture of the Human Condition.

However, by the word of Gilgamesh in the 7th Singularity of Fate/Grand Order, the Evils of Man are the Calamities over which Humanity is destined to prevail.

In the Final Singularity, Gilgamesh further elaborates that the Evils of Man are by intrinsic nature the Love of Man (人類愛), as -- unlike malicious intent directed toward humanity -- a true desire to preserve the Rationality of Man is inexhaustible. Justified in the pursuit of a more favorable future, fangs are brought to bear against the peace of the present -- but any such endeavor inevitably brings forth a stagnation (淀) within the the History of Man (人類史).

Class Skills
Entities of the Beast class are stated to possess the following capabilities as Class Skills:

Independent Manifestation

 * Independent Manifestation (単独顕現) is a capacity that permits the unrestricted projection and materialization of the soul (魂の物質化), 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 Man, 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 (魔神柱) is comparable to the use of the Third Magic.
 * In the circumstance of Tiamat, Independent Manifestation is described as an expression of the skillholder's omnipresence across all eras and locales -- lending a general immunity against existential threats by way of time paradox or the conventional imposition of death (即死系攻撃).

The Authority of the Beast

 * The Authority of the Beast (獣の権能) 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) itself -- being essentially a Divine Authority (権能) to destroy what one has birthed. It is likely that the Skill as held by the other Evils of Man is justified by alternative means. Again by the example of Tiamat, the Authority of the Beast is apparently communicable to other entities per the will of the skillholder.

Self-Modification

 * To take the example of Tiamat, the skill of Self-Modification (自己改造) as held amongst the Evils of Man potentially permits the unrestricted fabrication and alteration of the skillholder's Saint Graph -- permitting, among other things, direct improvements to defense and the addition of capabilities. This is achieved in Tiamat's case by way of freely reshaping the Black Mud (黒泥) that comprises the Sea of Life (生命の海) -- all of which is in effect an extension of her being. Per the circumstances of the Authority of the Beast, the mechanics and justification for the operation of the Skill among the other Evils of Man likely differ from Tiamat's rendition.

Known Beasts
Aside from the Beasts that have so far made an appearance, Fate/Grand Order and Fate/Extra CCC confirm the existence of several others. In Fate/Extra CCC, Gilgamesh passingly compares BB to an Evil of Man ; and 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), Tamamo calls Manaka Sajyou a Natural-born Evil of Man (生粋の人類悪).

Beast VI
Beast VI (ビーストVI) is stated within Tiamat's in-game profile to possess the Personal Skill known as Nega-Messiah (ネガ・メサイヤ) -- an ability of the same variety as Tiamat's Nega-Genesis (ネガ・ジェネシス), which generates a Conceptual Bounded Field (概念結界) that rejects the evolutionary course (進化) and the Genesis of the Earth (地球創世) expressed within the proper continuity of the History of Man (人類史), consequently proffering a resistance against the Noble Phantasms of any Servants generated as an output of the above processes.

The Beast of "Regret"
In Chapter 4 of the 7th Singularity, the Old Man of the Mountain mentions that, just as Pity (憐憫) is "one amongst the Evils" (悪の一つ), so too is Regret (慚愧). The identity and numerical designation of the Beast that presides over Regret is presently unknown.

"The VII of the End"

 * Main Article: "The VII of the End"

In Chapter 14 of the Final Singularity, Gilgamesh states that as of the appearance of Goetia, "the VII of the End" (終局のⅦ) will have appeared somewhere in the world, as their manifestations are in some way interlinked; any world in which an Evil of Man has manifested is said to tend unto "the Evil of the End" (終局の悪), and thereby visited with mounting calamities.

Hakumen Konmou Kyuubi no Kitsune


In Fate/Extra CCC, the Hakumen Konmou Kyuubi no Kitsune (白面金毛九尾の狐) that speaks to Hakuno Kishinami in Tamamo-no-Mae's Secret Garden #3 gives that as Divine Spirits are "merely extant" (ただそこにあるだけ) as temporal circumstance or phenomena (時勢、現象) fundamentally absent of human notions of positive or negative valence, so too is she herself "merely extant" as an Evil of Man. Furthermore, the expression of her existence and that of her aspects conform unfailingly to the present convictions of Man, much in the manner of Divine Spirits; and thus, whether she manifests as a benevolent or monstrous being is inconstant, varying from era to era per the requirements of humanity.

As a Beast, the numerical designation associated with the Golden-Furred Fox is unknown, and the Sin that she presides over is similarly unknown.

Primate Murder
In Chapter 15 of the Final Singularity of Fate/Grand Order, it is stated that the Primate Murder mentioned in the materials for Kagetsu Tohya is an alternate-world iteration of the Beast IV (ビーストIV), which is expressed within the continuity of Fate/Grand Order as Cath Palug (キャスパリーグ). However, as Cath Palug is more accurately a member of the Breed of Calamity (災害の種) -- the species that holds the potential to manifest the Fourth Beast -- it is unclear that Primate Murder is indeed a divergent expression of the specific Cath Palug that appears before the Protagonist of Fate/Grand Order.

The Ancient "I"
In Melty Blood: Actress Again, the Dust of Osiris plots to crystallize the whole of the planet and its inhabitants as Philosopher's Stones (賢者の石) -- a medium by which to render the continuity of history to permanent, imperishable record as a matter of preserving humans against certain destruction. Arcueid Brunestud, upon learning of her plan, states that "the approach of overcoming death by reducing all things to zero" has been attempted before, and that the thinking behind it is a thousand years out of date -- having originally been the plan of the Ancient "I" (古い"一"). It is unclear if the Ancient "I" of the Melty Blood continuity is equivalent in meaning to Goetia's title as the "I" of the Original Sin (原罪の"一").