Beast II (ビーストⅡ, Bīsuto II?) is a Beast-class Servant who appears in the Grand Orders of Fate/Grand Order.



Beast II's True Name is Tiamat (ティアマト, Tiamato?), one of the Primordial Deities in Mesopotamian Mythology/Sumerian Mythology.[1][2] Tiamat is an Earth Mother Goddess, a branch of Çatalhöyük's forgotten goddess.[3] Along with Abzu, she was manifested of the Sea of Dawn (黎明の海, Reimei no Umi?) -- an Ocean of Void (無の海, Mu no Umi?) that lies below the Underworld of Ereshkigal, said to have once been under the administration of the god Enki.[4]

In Sumerian Mythology, the gods were given birth from the pairing of Tiamat, who is the salt water, and Abzu, who is the fresh water. Afterwards, the gods, whom are their children, waved their banner of revolution against the primeval father Abzu and acquired supremacy over the world. At this moment, Tiamat gently approved the deeds of her children. It is proof that her love for her children has won over her love for her husband.[1][2]

However, the gods pointed their blades even at Tiamat, their mother. Tiamat, in her grief and disorder, gave birth to 11 Magical Beasts as her new children, and they altogether had a showdown with the gods. At the end of the conflict, Tiamat and her 11 Magical Beasts were torn apart. It is said that the gods tore up her corpse into two, forming heaven and earth from it, and thus, had established the ritual for the creation of the World of Man.[1][2]

Tiamat was “a womb discarded after the Genesis”, becoming the origin of Sumerian Mythology. She was turned into a “Mother Sea” and was put to use as a breeding ground to produce life, but once the earth’s environment stabilized and after the ecosystems were established, she was banished to the World of Imaginary Numbers (虚数世界, Kyosuu Sekai?) (a World on the Reverse Side (裏側の世界, Uragawa no Sekai?); an imaginary space that has no life and is not even a Parallel World) as something unnecessary. (Seeing that the ecosystem was already established, there is no need for her, one who designs life randomly, and it is said that regarding the course the lifeforms who acquired intelligence conforms to, she was nothing but an impediment by now.) Hereafter, Tiamat has been waiting in the mirror world for a chance to return back to her original world.[1][2]


As of obtaining the Holy Grail that Goetia stored within the heart of Kingu, the Sea of Life (生命の海, Seimei no Umi?) initially manifests a human-scale corpus known as Femme Fatale (ファム・ファタール, Famu Fata-ru?) -- roughly 160cm in height, clad with arm and leg restraints. Gilgamesh refers to this as Tiamat's Cerebral Corpus; it is suggested to represent whatever remains of Tiamat's mind or consciousness. Upon partial awakening, the Cerebral Corpus is stained in red and black in a manner reminiscent of Dark Sakura.

Following the annihilation of the Cerebral Corpus, the Sea of Life manifests Tiamat in the form of a Titan (巨人, Kyojin?) -- later demonstrated to be capable of flight by the use of her Wing-Horns (角翼, Kakuyoku?). However, in the circumstance that Tiamat faces a severe threat, she enacts Self-Modification (自己改造, Jikou Kaizou?) and Saint Graph Dilation OperationsInflation (霊基膨張工程インフレーション, Reiki Bouchou KouteiInfure-shon?) to assume a Sphinx-like Draconic Corpus (竜体, Ryuutai?) -- referred to as her "true appearance". After the Draconic Corpus is imposed with the "Concept of Death" (死の概念, Shi no Gainen?) by the Old Man of the Mountain, da Vinci confirms that Tiamat's Saint Graph Core (霊基核, Reiki-Kaku?) is situated within its brain.[5]

To clarify, Tiamat's assumed appearances are, with the exception of her Draconic Corpus, said to express her existence as a Divinity (神性, Jinsei?, lit. "Divine Nature"). However, the assumption of her Draconic Corpus is described by Romani Archaman to entail an unveiling of her complete and unadulterated existence -- moving him to distinguish it from Tiamat's other states as "the very Corpus of a God" (神の体, Kami no Karada?, lit. "Flesh of God"). Though Tiamat's combat capabilities and defenses are indeed the strongest upon assuming her Draconic Corpus, Jaguar Man comments that this is in reality Tiamat in her weakest, most vulnerable state.[5]

Owing to Tiamat's Authority (権能, Kennou?) over the Sea of Life and her capacity for Self-Modification, she is capable of freely remodeling her physical existence as the needs demand, and therefore is unrestricted to the appearances described above.

The Black Mud of the Sea of Life is also included in Tiamat’s height.[1] Her height matches the area of the Indian Ocean.[2] However, given that the mud is made up of Imaginary Numbers, her weight cannot be measured.[1][2] Essentially the same as zero.[2] On the other hand, its volume grows to be infinite. In short, it is a 4-dimensional pocket.[1][2]


Something like a personality cannot be confirmed from her. Whether Tiamat has lost her ideals, or whether she has no reason since the beginning, it can be interpreted as either way, but one cannot surmise the reason. Although she simply birthed, raised and loved her children, which was viewed as her only meaning in life, she has set out to fight against humanity, of whom they decided that for the sake of denying this meaning, they have declared “you are not needed.” Her behavioural ideology when becoming a Beast is extremely simple; she runs under the extremely primitive system of “If I do not kill humanity, I will be killed.[1][2]

Concerning Tiamat's motivation and attitude towards the Master, he/she is one of seven billion humans. Naturally a target for obliteration. As far as human beings are concerned, Tiamat is a repulsive aggressor (invader), but concerning Tiamat too, human beings are terrifying aliens (extraterrestrials).[1][2]

Because Tiamat cannot conversate, her pronouns are unknown.[2]


Fate/Grand OrderEdit

Babylonia: The Absolute Frontline in the War Against the Demonic BeastsEdit

While Beast II achieved her return to this world with the collapse of the Human Order Foundation and due to the power/distortion of the Holy Grail, she was however in the middle of a deep slumber. Setting aside the fact that Merlin's magecraft kept her asleep, once Beast II was attacked by Chaldea, she woke from her sleep and setted out to clean up humanity in accordance with her primal instincts.[1][2]

Although there is resentment/hatred/sadness for being abandoned for having already served her purpose, there is also a conduct in indulging in the “joy” of coming back to repaint the earth’s ecosystems once again as the mother of everything.[1][2]

Her Class was determined by her real nature mentioned above. The Primordial Goddess and the likes are but false titles. Deserted by the humans, that being is one of the great disasters most rejected by human history. That name is Beast II. One of the seven Evils of Man, the beast that carries the principle of “Regression”.[1][2][5]

Also, the title called Femme Fatale was something given by Beast I (Goetia). Goetia successfully saw the true nature of Beast II’s core, so he bestowed a title meant for a Woman of Destiny rather than one meant for a Mother of the Gods (Magna Mater). At the bottom of her hatred towards humanity, there is also joy towards humanity for becoming a mother, as well as love towards humanity, them being the children of her first-generation children. For this reason, Beast II binds herself. A mother’s love is something necessary for growth, but it is something unnecessary for adults. In order for humanity to advance to the next stage, they must overcome the “original woman”.[2]

Other appearancesEdit

In Fate/Extra CCC, Tiamat was mentioned in BB's Potnia Theron Skill. It is the authority of the Earth Mother Goddess whom BB compiled and absorbed from the abyss of the Moon Cell. It is the embodiment of the power of creation possessed by the mother goddesses, originating from a forgotten goddess approximately 8000 years ago (the goddess of Çatalhöyük), and branching to Tiamat, among other goddesses.[3]


Tiamat has no Noble Phantasms. The form of her brain, which is her core, has nothing that can be possibly said to be a Noble Phantasm.[2]

Class SkillsEdit

Authority of the BeastEdit

Authority of the Beast (獣の権能, Jū no Ken'nō?) is an Anti-Humanity (対人類, Tai-Jinrui?) Class Skill that enhances the skillholder's capacity to harm Heroic Spirits, Divine Spirits, and all organisms birthed of the "Mother's Womb". This Skill is held not solely by the 2nd Beast, but shared amongst all the Magical Beasts birthed of her womb.[1]

Independent ManifestationEdit

Independent Manifestation (単独顕現, Tandoku Kengen?) is a Class Skill that lends the capacity to manifest independently within the temporal reality. Within seven days of manifestation, the Indian Ocean is smothered black; and Tiamat incessantly spawns Magical Beasts to the end of devouring humanity. However, as the body of the 2nd Beast is the ocean itself, it cannot make landfall. Therefore, the role of annihilating humanity is delegated to her children.
At a Rank of B, this Skill is furthermore a declaration of the holder’s presence across all of space-time, and thereby grants immunity against existential threats by way of time paradox or the instantaneous imposition of death.[1]
In the 7th Singularity of Fate/Grand Order, the 2nd Beast overcomes her restriction against landfall by use of Self-Modification -- altering her horns into wing-like appendages and taking flight. Upon the eradication of the Sea of Life within her immediate environs by the Divine Authority of Quetzalcoatl, she is able to spontaneously regenerate her domain by dispensing tides of the Black Mud from the base of her feet.


Self-Modification (自己改造, Jikou Kaizou?) is a Skill that permits the 2nd Beast to remold her Saint Graph by use of the Black Mud of the Sea of Life. Growing from the scale of her standard Saint Graph (Femme Fatale), the 2nd Beast can assume the form of a Draconic creature of over 60 meters in height. In this form, the 2nd Beast obtains immunity against any attacks of a Rank of A++ or lower.[1]

Personal SkillsEdit

Sea of LifeEdit

Kingu sJ0drd7

Kingu states that the Black Mud of the Sea of Life is the substance known as the Mud of the Grail.

The Sea of Life (生命の海, Seimei no Umi?) is a Personal Skill that expresses the Divine Authority of the 2nd Beast as "the Sea From Which Life Itself is Sprung" (命を産む海, Inochi wo Umu Umi?). Being that the Sea cycles the True Ether of the Genesis of Earth (地球創世記, Chikyuu Souseiki?), the supply of Magical Energy available to the 2nd Beast's Mana Reactor (魔力炉心, Maryoku Roshin?) is within the boundaries of the domain, unlimited. The movement by which the Sea of Life extends its domain is referred to as the Chaos Tide (ケイオスタイド, Keiosu Taido?).
The substance of the Sea of Life is a Black Mud (黒い泥, Kuroi Doro?) that acts to pollute Saint Graphs (霊基, Reiki?, lit. "Spiritual Foundation"), fundamentally remaking any organism that enters unto the Sea a "Child of Tiamat" that bears an arbitrary selection of the following skills: Self-Modification (自己改造, Jiko Kaizou?), Environmental Modification (生態変化, Seitai Henka?, lit. "modification of environment / ecology"), Environmental Fusion (生態融合, Seitai Yuugou?, lit. "fusion unto environment / ecology"), and Unit Mitosis (個体増殖, Kotai Zoushoku?, lit. "Reproduction of Individual Entities"). Upon emergence from the Mud, the Children of Tiamat are imposed with a cellular-level Geis — a Nitrogenous Base ContractAmino-Geis (塩基契約アミノギアス, Enki-Keiyaku?) — automatically rendering them as enemies of Man.[1] Servants are no exception to the process.
In the 7th Singularity of Fate/Grand Order, Kingu refers to the Sea as the Primordial Organism (原初の生命, Gensho no Seimei?, lit. "the first life") and the Sea of Chaos (混沌の海, Konton no Umi?) -- further stating that, amongst practitioners of Magecraft, the Black Mud is the substance referred to as the Mud of the Grail (聖杯の泥, Seihai no Doro?).


Nega-Genesis (ネガ・ジェネシス, Nega Jeneshisu?) is a Skill of the same variety as the 6th Beast's Nega-Messiah (ネガ・メサイヤ, Nega Mesaiya?). It is expressed in the manifestation of a generation of a Conceptual Bounded Field (概念結界, Gainen Kekkai?) that rejects the evolutionary course (進化, Shinka?) and the Genesis of the Earth (地球創世, Chikyuu Sousei?) expressed within the proper continuity of the History of Man (人類史, Jinrui-shi?), consequently proffering a nullification against the Noble Phantasms of any Servants generated as an output of the above processes.[1][2] Specifically speaking, a barrier takes root against the Noble Phantasms of Servants with the attributesHuman” and “Star”.[2]

Monstrous StrengthEdit

Monstrous Strength (怪力, Kairiki?) is a Skill that permits the augmentation of its holder's Strength, borne of the holder's nature as a monster. In the circumstance of the 2nd Beast, this Skill is expressed at its highest level. As of assuming Draconic form by way of reshaping the Black Mud of the Sea of Life, the 2nd Beast attains the Strength of a Titan.[1]

Hypothesized CapabilitiesEdit

Paradox RestorationEdit

Romani Archaman and Gilgamesh hypothesize that Tiamat's existence as the Mother of Genesis (原初の母, Genshou no Haha?) renders as a Law of Nature (自然の法則, Shizen no Housoku?) the "fact" that she is "the first to be born into the World, and the last to die." That is to say, so long as other life exists within the same "World" as Tiamat, she may definitionally be incapable of dying.
Romani Archaman terms this capability "Paradox Restoration" (逆説的復元, Gyakusetsu-teki Fukugen?) -- and for the purpose of neutralizing the phenomenon, Gilgamesh plots to entrap Tiamat within the Underworld (冥界, Meikai?, lit. "World of Death") domain of Ereshkigal, making use of its nature as a "World" wherein the only "life" that is properly recognized to exist are those existences subjectively defined as "the Living" (生者, Shouja?) at Ereshkigal's whim. Furthermore, as the domain was in part originally created to restrain and confine rogue gods, the Sanctions of the Underworld (冥界の刑罰, Meikai no Keibatsu?) exert a strong Anti-Divinity effect by default, and would therefore hypothetically weaken Tiamat.[5]
In practice, however, it is unclear that Paradox Restoration is indeed one of Tiamat's actual capabilities, or whether the actions taken against her were in fact effective in neutralizing the phenomenon.


Creation and ConceptionEdit

Kotetsu Yamanaka is the character illustrator for Tiamat.[1][2] Kinoko Nasu is the scenario writer for her character.[2]

It is a digression, but Tiamat was taken into consideration as a boss of a raid event when planning “Fate/Grand Order” in 2014. She is an anthropomorphism of the sea, someone similar to a generator that produces powerful Magical Beasts, and she was depicted as an unequalled beautiful woman that dissolves into the chaotic mud. During the moment Beast II appears, “Fate/Grand Order’s” image… becomes a fun Starship Troopers. It is also a service character that makes a homage to Dark Sakura of “Fate/stay night”. Revising that design is for some reason, two times more appealing, as long as you can see “Ah, it is a genealogy of that Dark Sakura.[2]

Comment from IllustratorEdit

"I joined together rivers/harvests and destruction (clear streams and sludge) growing wild as in the color image (of the black + red stripes) of Dark Sakura. I aimed at a simple silhouette of a little girl with gigantic horns + hiding her breasts.

Monster Form: For the MAP plan and on the occasion of expressing her parts, I crammed as many details of gigantic structures in order to potentially put them for another use. (I was thinking something like walking on a road above her horns.)"[2]


  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 1.31 1.32 1.33 1.34
  2. 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 2.21 2.22 Fate/Grand Order material IV - Tiamat, p.374-395, translated by Clyton at Beast's Lair.
  3. 3.0 3.1
  4. 5.0 5.1 5.2 5.3