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 few Primordial Deities in Mesopotamian Mythologies.[1] Tiamat is an Earth Mother Goddess, a branch of Çatalhöyük's forgotten goddess.[2] 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.[3]

The gods were born from the union of the freshwater Abzu and the saltwater Tiamat. Then, the gods rebelled against their father, and seized authority over the world from him. Tiamat quietly approved of her children’s actions. It was proof that her love for her children outweighed her love for her husband. However, the gods then turned their blades on Tiamat. Tiamat wailed and raged, birthing eleven new Magical Beasts to oppose the gods.[1]

At the end of the war, Tiamat and the Eleven Beasts were destroyed. The gods split Tiamat’s corpse in two, and used them to form the heavens and earth. It is said that this ritual created the world of humans.[1]

Tiamat is the womb that was cast aside after the world was created. She is the Maternal Sea who was used as the soil to give birth to life, but once the Earth’s environment settled and ecosystems were established, Tiamat was deemed unnecessary and driven out into a World of Imaginary Numbers (虚数世界, Kyosuu Sekau?) -- described as being situated within the Reverse of the World (世界の裏側, sekai no uragawa?, lit. "interior / reverse of the world"). This realm is not a parallel world; nor the old world under a single layer, it is a space that contains no life.[1]

Because the Earth’s ecosystems were established, Tiamat, who randomly designs life, was no longer needed. The goddess became nothing more than an obstacle to the process by which life forms acquired the intelligence determined by the planet. Since then, Tiamat has been waiting in the world of imaginary numbers for her chance to return to Earth.[1]


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 160 cm 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.[4]

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.[4]

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 needs demand, and therefore unrestricted to the appearances described above.

Incidentally, the Black Mud of the Sea of Life is also included within measurements Tiamat’s height. However, as the mud is comprised of imaginary numbers, her weight cannot be quantified. Tiamat’s volume is furthermore unlimited; she is, in effect, a four-dimensional pocket.[1]


It is impossible to confirm if Tiamat possesses anything resembling a personality. Perhaps she lost her intellect, or perhaps she never had one to begin with. Either is acceptable. The only meaning to her existence is to create, raise, and love her children. Thus, she set out to make war against humanity for declaring that it has no need for her. It is the functioning of an extremely primitive system: “If I do not exterminate modern humanity, I will be killed.” While she does hold a grudge and bears hatred and sadness for being abandoned after her purpose has been fulfilled, she is doing this to indulge in the "joy" of once again becoming the mother of everything.[1]

Motivations, behavior towards master. One of seven billion. An obvious target to be obliterated. While the Second Beast is a repulsive invader to humanity, humans are terrifying aliens (extraterrestrials) to the Second Beast.[1]


Fate/Grand OrderEdit

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

While Tiamat was returned to this world by the collapse of the Human Order Foundation and the power of the Holy Grail, she remained in a deep slumber. Setting aside the fact that Merlin's magic kept her asleep, once Tiamat was attacked by Chaldea, she woke from her sleep and set out to follow her instincts and purge humanity.[1]

This did stem from Tiamat’s resentment, hatred, and sorrow for being abandoned as a used tool, but she was also joyously indulging in the repainting of Earth’s entire ecosystem and returning all of it to its mother.[1]

It is due to this true nature that her class was chosen. “Goddess of Creation” and such are but false titles. She was deserted by humans, becoming the catastrophe most strongly rejected by human history.[1][4]

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 and even branching to Tiamat.[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 Demonic 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 Demonic 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 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 length. In this form, the 2nd Beast obtains immunity against any attacks of a Rank of A++ or lower.[1]

Personal SkillsEdit

Sea of LifeEdit

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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 generates 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 resistance against the Noble Phantasms of any Servants generated as an output of the above processes.[1]

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 Demonic Beast. 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 be definitionally 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.[4]
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.


Kotetsu Yamanaka is the character designer for Tiamat.[1]


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