Pseudo-Servant

are Servants that have manifested utilizing humans as their vessels. While similar to Demi-Servants in the end result, the process of forming one is different.
==Characteristics==
PseudoServant.png|Explanation of what a Pseudo-Servant is.
Ishtar and Ereshkigal summon.gif|The Priestesses summoning both Ishtar and Ereshkigal through Rin's body.
Pseudo-Servants are the result of Heroic Spirits and Divine Spirits that cannot become Servants normally.Fate/Grand Order - Zhuge Liang Interlude I: Heroic Spirit Possession There are those like Senji Muramasa whose Saint Graph isn't worthy of being a Heroic Spirit,Fate/Grand Order: Epic of Remnant - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses - Section 4: Seconda Cantica: Inferno (Beginning) Divine Spirits that cannot manifest in the modern age without a host,Fate/Grand Order - Babylonia: The Absolute Frontline in the War Against the Demonic Beasts - Section 10: Good Morning, Goddess of Venus and other Saint Graphs that cannot be created by Chaldea's FATE Servant summoning system. In such cases, human vessels are utilized to allow the Spirits to manifest, the human body acting as a catalyst to forcibly summon the Spirit. Sherlock Holmes speculates that there may be Heroic Spirits only summonable in the form of a Pseudo-Servant taking over a deceased body.Fate/Grand Order: Cosmos in the Lostbelt - Anastasia: Permafrost Empire - Section 2: Yaga While the result is the same as a Demi-Servant, a human empowered by a Heroic Spirit, the idea behind each is different.
===Personality and abilities===
Most Pseudo-Servants merge into a single entity, their personalities combining to become a third, new personality that combines aspects of the personalities of both the vessel and the Spirit. In the case of Divine Spirit Pseudo-Servants, they should generally manifest simply utilizing the host as a vessel, placing a small portion of their power into them and forcing them to manifest as a Servant. 
For those that do merge with their host, the Divine Spirit's memories will be at the forefront of the fusion of personalities, but the effect of the host's personality on the Divine Spirit varies. It is possible to manifest in such a way that it is akin to the "Goddess using a human as her core" in the case of Ishtar or a "human using a Goddess as her own core" in the case of Parvati, but the Goddess' mind will still be at the forefront of the manifestation due to the Divine Spirit possessing more Spiritrons. As humans are unable to handle the full weight of a Divine Spirits memories and mind, the memories and past of the human host are typically sealed upon merging.
There are special cases where the host and possessing Spirit remain completely separate, generally due to the personal preference of the possessing Spirit. They are the rarest pattern of Pseudo-Servant.Fate/Grand Order - Sima Yi Interlude I: Lady Reines's Reminiscence In the case of Divine Spirit Pseudo-Servants, Ganesha in particular is an exemption where the host is the one in full control.Fate/Grand Order: Cosmos in the Lostbelt - Yuga Kshetra: Saṃsāra of Genesis and Terminus - Section 3: A Mountain Where One Encounters God
Being placed into a host can reduce the rank of certain Skills like Divine Core of the Goddess.Fate/Grand Order material V - Parvati ProfileFate/Grand Order material IV - Ishtar Profile Other Skills may be modified due to influence from the host, such as Mana Burst (Gem) and Protection of the Scales.Fate/Grand Order material VIII - Astraea Profile The host can also have Skills entirely unique to themself, such as Supreme Mystic Code: Volumen Hydrargyrum.Fate/Grand Order material VIII - Sima Yi Profile Abilities unique to the host have ability for growth, differing from normal Servants that are complete records on the Throne of Heroes, due to the special nature of Pseudo-Servants, beings who are simultanously deceased and alive.
===Host selection criteria===
Pseudo-Servant hosts are generally individuals connected to a Holy Grail in some capacity.Fate/Grand Order material IV - Jaguar ManFate/Grand Order - Patchwork London: Phantasmal Collection Realm - Section 3: Masquerade Most hosts will be Magi who already possess some power of their own. Hosts and the possessing Spirit require similar personality traits and mentality, compatible qualities such as Magic Circuit quality and talent, and similarities in their "shape of the soul", so the host will typically closely resemble them. 
There can be secondary criteria depending on the possessing Spirit, such as Jaguar Man requiring "the person who carries the fate of the wildness and the wildest force is elected." Particular circumstances like the Noble Phantasm Chu Shi Biao can allow for individuals not directly connected to a Holy Grail to manifest or for hosts with no personal connection to the possessing Spirit to be summoned.Fate/Grand Order - Patchwork London: Phantasmal Collection Realm - Section 9: The Mage's Inference Divine Spirit Pseudo-Servants may have the ability to choose their own host, but they do require commonalities in personality.Fate/Grand Order - Patchwork London: Phantasmal Collection Realm - Section 10: The False Sacred Lance (3/3)
Pseudo-Servant hosts do not need to be from the same world into which they are summoned, Lord El-Melloi II originating from the World of Fate/stay night and being summoned as the host of Zhuge Liang in the World of Fate/Grand Order.Fate/Grand Order - Fate/Accel Zero Order - Prelude Those that retain the personality of the host may encounter alternate versions of people they know from their original world, which may be a weakness to them depending on the relationship with said individual.
Within the parody work Fate/Grand Order x Himuro's World, the personification of the Counter Force acts as an intermediary to help hosts find a suitable Heroic Spirit.Fate/Grand Order x Himuro's World
===Saint Graph===
Pseudo-Servant possess two Saint Graphs, the possessed human and the possessing spirit.Fate/Grand Order - Patchwork London: Phantasmal Collection Realm - Section 8: The Final Scrap In the case of Pseudo-Servants that maintain separation between the human and Spirit, it is possible for the human to separate from the Spirit.Fate/Grand Order - Fate/Accel Zero Order - ACT-18: The Fallen Grail In the case of Lord El-Melloi II and Zhuge Liang, this allows Lord El-Melloi II, with permission from the Heroic Spirit, to grant the power of Zhuge Liang to his younger self from an alternate world temporarily, and to sacrifice much of Zhuge Liang's power to create a false corpse to hide himself from his enemies. The removal of the Spirit leaves the power of the Servant around that of the possessed human, but also makes them difficult to identify as a Servant. The human Saint Graph can sleep while the Heroic Spirit Saint Graph remains awake.
Medusa speculates that recently manifested Pseudo-Servants may be forcibly separated from their vessels if hit with a sufficiently powerful spiritual attack.Fate/Grand Order - Parvati Trial Quest: A Lady Descends upon Fuyuki
Pseudo-Servants need more rest than normal Servants, benefiting from sleep.
===Other uses===
The terminology Pseudo-Servant is used in other contexts that may not be connected. The term was first utilized to refer to Nursery Rhyme being a "pseudo-Servant dreamt up by her Master." Titan Altera, utilizing her Familiar Creation, is able to create Pseudo-Servant Hero Altera as her human-sized avatar. Space Ishtar, a resident of the Servant Universe, uses the term to refer to herself as a "Pseudo-Servant who really, truly believes herself to be a real Servant."Fate/Grand Order - Saber Wars 4.8: Shining Blue Galactic Space Opera — Queen's High School II
==Known Pseudo-Servants==
Pseudo-Servant 	Class 	Possessed human 	War 	Series
Abigail Williams of Salem 	Foreigner 	Herself 	Grand Order 	Fate/Grand Order
Amour 	Ruler 	Caren Hortensia 	Grand Order 	Fate/Grand Order
Amelia Jenks Bloomer 	Caster 	Kane Himuro 	Grand Order 	Fate/Grand Order x Himuro's World
Astraea 	Ruler 	Luviagelita Edelfelt 	Grand Order 	Fate/Grand Order
Azumi-no-isora 	Alter Ego 	Hibiki Hibino & Chikagi Katsuragi;Mr. Smartphone	Grand Order 	Fate/Grand Order
Durga 	Archer 	Sakura Matou 	Grand Order 	Fate/Grand Order
Ereshkigal 	Lancer 	Rin Tohsaka 	Grand Order 	Fate/Grand Order
Ereshkigal Alter 	Lancer 	Rin Tohsaka 	Grand Order 	Fate/Grand Order
Ganesha 	MoonCancer 	Jinako Carigiri 	Grand Order 	Fate/Grand Order
Friedrich Nietzsche 	??? 	Yukika Saegusa 	Grand Order 	Fate/Grand Order x Himuro's World
Fujino Asagami 	Archer 	Herself 	Grand Order 	Fate/Grand Order
Ishtar 	Archer 	Rin Tohsaka 	Grand Order 	Fate/Grand Order
Jaguar Man 	Lancer 	Taiga Fujimura 	Grand Order 	Fate/Grand Order
Kali 	Alter Ego/Archer 	Sakura Matou 	Grand Order 	Fate/Grand Order
Kama 	Assassin 	Sakura Matou 	Grand Order 	Fate/Grand Order
Kama/Mara 	Beast 	Sakura Matou 	Grand Order 	Fate/Grand Order
Kama (Mistake) 	Archer 	Sakura Matou 	Grand Order 	Fate/Grand Order Arcade
Manannán mac Lir 	Alter Ego 	Bazett Fraga McRemitz 	Grand Order 	Fate/Grand Order
Odin 	Caster 	Cú Chulainn 	Grand Order 	Fate/Grand Order
Ototachibana-hime 	Caster 	Ogasawara Kaya 	Waxing Moon Ritual	Fate/Samurai Remnant
Parvati 	Lancer 	Sakura Matou 	Grand Order 	Fate/Grand Order
Rasputin 	Alter Ego 	Corpse of Kirei Kotomine 	Grand Order 	Fate/Grand Order
Senji Muramasa 	Saber 	Shirou Emiya 	Grand Order 	Fate/Grand Order
Senji Muramasa 	Alter Ego 	Shirou Emiya 	Grand Order 	Fate/Grand Order
Shiki Ryougi'Fate/Grand Order' - Kara no Kyoukai: The Garden of Order - Encounter	Assassin 	Herself 	Grand Order 	Fate/Grand Order
Shiki Ryougi 	Saber 	Herself 	Grand Order 	Fate/Grand Order
Sima Yi 	Rider 	Reines El-Melloi Archisorte 	Grand Order 	Fate/Grand Order
Sitonai 	Alter Ego 	Illyasviel von Einzbern 	Grand Order 	Fate/Grand Order
Space Ereshkigal 	Beast 	Rin Tohsaka 	Grand Order 	Fate/Grand Order
Takuboku Ishikawa 	Assassin 	Kaede Makidera 	Grand Order 	Fate/Grand Order x Himuro's World
Tezcatlipoca 	Ruler/Grand Assassin	A vessel he made himself 	Grand Order 	Fate/Grand Order
Unknown 	??? 	Monji Gatou 	Grand Order 	F/GO Drama CD: The Blue Bird
Yaobikuni 	MoonCancer 	Kiara Sessyoin 	Grand Order 	Fate/Grand Order
Zhuge Liang 	Caster 	Lord El-Melloi II 	Grand Order 	Fate/Grand Order
;Others
Characters that have similar characteristics to Pseudo-Servants but have not been officially classified as such.
Servant 	Class 	Possessed human 	War 	Series
Angra Mainyu	Avenger	Shirou Emiya 	Heaven's Feel Redux 	Fate/hollow ataraxia
Black Iri 	Avenger	Irisviel von Einzbern	Fourth Fuyuki Holy Grail War	Fate/Zero
Jeanne d'Arc	Ruler 	Laeticia 	Great Holy Grail War 	Fate/Apocrypha
Alakshmi 	Saber 	Lakshmibai 	Grand Orders 	Fate/Grand Order
==References==
Category:Servants
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Category:Terminology in Fate/Grand Order
Category:Servants by type
Category:Composite Servants
Category:Divided Spirits