Berserker

, Mad Warrior and , is one of the Four Cavalry Classes among the seven standard Servant classes summoned for the Holy Grail War. Servants placed within this Class are always Heroic Spirits who have gone during battle at least once in their lifetime. This trait allows them to use the special ability Mad Enhancement, which trades their and sanity for a large power boost. This Class is usually for magi who have summoned Heroic Spirits with insufficient abilities and attributes, allowing them to strengthen their Servants to make up for their lower attributes and compete against stronger opponents. While it is ideal for Servants to reach the level of the Heroic Spirit, the Class allows for their attributes to surpass even the original. If used on an already strong Heroic Spirit, such as Heracles, they will become empowered to truly extraordinary levels. The abuse of this to create powerful Servants has made the Class referred to as the strongest of all seven classes.
It is possible to specify in the summoning ritual that the Servant be placed under the Berserker Class for those familiar with the workings of the Grail System. By adding in a specific line, Zouken Matou and the Einzbern family, as members of the Three Founding Families, were able to choose the Class during the Fourth and Fifth Holy Grail Wars respectively. This Class comes at a price, as the Berserker Class is the most difficult to control and a Master must expend a large amount of additional magical energy merely to maintain the Berserker, and the affected Heroic Spirit may lose access to certain abilities or even Noble Phantasms depending on how much sanity it has taken away for power.
Masters are unable to utilize coordination with their Servant unless gifted with superb control over them. The lack of complex rational thinking keeps them from being able to follow more than simple directions, and it may even require Command Spells to keep them from acting on their own. They generally rely on little other than brute strength and overwhelming, uncontrolled strikes to physically beat down their opponents. As a result, in every Holy Grail War before the Fifth, the magical energy consumption and insanity of the Berserker Class has made them incredibly difficult to maintain and control. Kariya Matou is drained of his energy at a high rate and eventually it causes his death, but he could have handled another Class without difficulty. They have generally brought about their own Master's ruin due to their inability to control them, so the Einzbern family developed Ilyasviel's Magic Circuits specifically so that she could handle the strain with ease in the Fifth Holy Grail War.
==Known Berserkers==
*Servants marked with ‡ are also able to be summoned by Ritsuka Fujimaru in the Grand Orders.
*Servants marked with † are also contracted to Hakuno Kishinami in the world of Fate/EXTELLA.
*Servants marked with ⁜ are those who change class mid-story but do not display characteristics substantially different from the original class.
True Name 	War 	Master
Unknown 	First Fuyuki Holy Grail War 	Unknown
Unknown 	Second Fuyuki Holy Grail War 	Unknown
None (Replaced by Avenger) 	Third Fuyuki Holy Grail War 	None
Lancelot‡† 	Fourth Fuyuki Holy Grail War 	Kariya Matou
Heracles‡ 	Fifth Fuyuki Holy Grail War 	Illyasviel von Einzbern
Arcueid Brunestud 	Moon Cell Holy Grail War 	Monji Gatou
Caligula‡ 	Moon Cell Holy Grail War 	Izaya Kii
Minamoto-no-Raikou‡ 	Moon Cell Holy Grail War 	Leila Raidou
Elizabeth Báthory 	Moon Cell Holy Grail War 	Meltryllis
Fergus mac Róich⁜ 	Moon Cell Holy Grail War 	Shinji Matou
Leonidas I⁜ 	Moon Cell Holy Grail War 	Shinji Matou
Li Shuwen⁜ 	Moon Cell Holy Grail War 	Julius B. Harwey
Lu Bu‡† 	Moon Cell Holy Grail War 	Rani VIII
Lu Bu(Rani VIII Demi-Servant)	Moon Cell Holy Grail War 	None
Frankenstein‡ 	Great Holy Grail War 	Caules Forvedge Yggdmillennia
Spartacus‡ 	Great Holy Grail War 	Deimlet PentelAvicebron
Arjuna (Alter) 	Grand Order 	Ritsuka Fujimaru
Atalanta Alter 	Grand Order 	Ritsuka Fujimaru
Beowulf 	Grand Order 	Ritsuka Fujimaru
Chacha 	Grand Order 	Ritsuka Fujimaru
Cú Chulainn (Alter) 	Grand Order 	Ritsuka Fujimaru
Darius III† 	Grand Order 	Ritsuka Fujimaru
Eric Bloodaxe 	Grand Order 	Ritsuka Fujimaru
Florence Nightingale 	Grand Order 	Ritsuka Fujimaru
Galatea 	Grand Order 	Ritsuka Fujimaru
Hijikata Toshizou 	Grand Order 	Ritsuka Fujimaru
Hyde 	Grand Order 	Ritsuka Fujimaru
Ibaraki-douji 	Grand Order 	Ritsuka Fujimaru
Kiyohime 	Grand Order 	Ritsuka Fujimaru
Kriemhild 	Grand Order 	Ritsuka Fujimaru
Louhi 	Grand Order 	Ritsuka Fujimaru
Morgan 	Grand Order 	Ritsuka Fujimaru
Mysterious Heroine X (Alter) 	Grand Order 	Ritsuka Fujimaru
Nagakura Shinpachi 	Grand Order 	Ritsuka Fujimaru
Penthesilea 	Grand Order 	Ritsuka Fujimaru
Sakata Kintoki 	Grand Order 	Ritsuka Fujimaru
Salome 	Grand Order 	Ritsuka Fujimaru
Sen-no-Rikyu 	Grand Order 	Ritsuka Fujimaru
Soujuurou Shizuki 	Grand Order 	Ritsuka Fujimaru
Tamamo Cat 	Grand Order 	Ritsuka Fujimaru
Vlad III 	Grand Order 	Ritsuka Fujimaru
Xiang Yu 	Grand Order 	Ritsuka Fujimaru
Duryodhana‡ 	System Grail War (Grand Order) 	Ayus
Minotauros 	Grand Order 	Kadoc Zemlupus
Otohime Kiyohime 	Grand Order 	Philipp Franz von Siebold
Boudica⁜ 	Grand Order 	None
Daedalus 	Grand Order 	None
Mecha Eli-chan⁜ 	Grand Order 	None
Nezha 	Grand Order 	None
Phantom of the Opera 	Grand Order 	None
Shibata Katsuie 	Grand Order 	None
Shuten-douji⁜ 	Grand Order 	None
Miyamoto Musashi 	Waxing Moon Ritual 	Takao Dayu
Kishimojin 	Waxing Moon Ritual 	None
Samson 	Waxing Moon Ritual 	None
Henry Jekyll and Hyde 	First Tokyo Holy Grail War 	Tatsumi Kitano
Heracles 	Second Tokyo Holy Grail War 	Sancraid Phahn
Asterios‡ 	Labyrinth Holy Grail War 	Wolfgang Faustus
Jack the Ripper 	True and False Holy Grail Wars 	Flat Escardos
Huwawa 	True and False Holy Grail Wars 	Haruri
Kijyo Koyo‡ 	"After" the Holy Grail War 	Karin
Heracles 	Fifth Ainsworth Holy Grail War 	Beatrice Flowerchild
Magni 	Unknown Ainsworth Holy Grail War 	Beatrice Flowerchild
Lancelot 	Unknown Ainsworth Holy Grail War 	Sakura Matou
Ragnar Lodbrok 	Doubles Subcategory Holy Grail War 	Lemina Eltfromm Yggdmillennia
Mori Nagayoshi‡ 	Strange Tales of the Imperial Holy Grail	Major Matou
Asakura Souteki 	GUDAGUDA Taikou Legend ZIPANG 	Asakura faction
Paul Bunyan‡ 	None (Learn More with Manga! FGO) 	Gudako
Tokugawa Ieyasu 	None (Koha-Ace) 	Unknown
Nevil Shute 	Most Powerful Great Figures Chapter 	Gai Gotou
==Berserkers with modified Saint Graphs==
Servants possessing the Class of Berserker through the modification of their Saint Graph rather than a standard summoning.
Heroic Spirit 	War 	Master
Brynhildr (Swimsuit) 	Grand Order	Ritsuka Fujimaru
Brynhildr (Fake) 	Grand Order	Jeanne d'Arc (Alter)
Fire Iri 	Grand Order	None
Jeanne d'Arc Alter (Swimsuit)	Grand Order	Ritsuka Fujimaru
Heracles Megalos 	Grand Order	None
Miyamoto Musashi (Swimsuit) 	Grand Order	Ritsuka Fujimaru
Oda Nobunaga (Swimsuit) 	Grand Order	Ritsuka Fujimaru
Ushiwakamaru (Corrupted) 	Grand Order	None
===Berserk Servants===
Berserk Servants are those granted the attribute of "Berserk" to their class by Jeanne Alter, granting them Mad Enhancement and a distorted personality.
Class 	Heroic Spirit 	War 	Master
Berserk Saber 	Chevalier d'Eon	Grand Order	Jeanne d'Arc (Alter)
Berserk Lancer 	Vlad III 	Grand Order	Jeanne d'Arc (Alter)
Berserk Archer 	Atalanta 	Grand Order	Jeanne d'Arc (Alter)
Berserk Rider 	Martha 	Grand Order	Jeanne d'Arc (Alter)
Berserk Caster 	Gilles de Rais 	Grand Order	Jeanne d'Arc (Alter)
Berserk Assassin	Carmilla 	Grand Order	Jeanne d'Arc (Alter)
==Other qualifying heroes==
True Name 	Current Class	Notes
Abraham Lincoln 	None 	Fate/Grand Order Chaldea Ace
Achilles 	Rider 	
Alexander the Great 	Rider 	Fate/Ace Royal
Charles VII 	None 	TYPE-MOON Ace Fate/Grand Order, p.125-126
Cú Chulainn (Normal) 	Lancer 	
Durga 	Archer 	Fate/Grand Order: Ordeal Call - Paper Moon: Inner World of the Imaginary Number Compass, Section 14: Extermination Goddess/how to avoid destruction
EMIYA 	Archer 	
Enkidu 	Lancer 	Fate/strange Fake Volume 1 - Prologue VI: "Lancer"
Gilgamesh 	Archer 	
Gilgamesh (Child) 	Archer 	
Gilles de Rais 	Caster 	
Jack the Ripper 	Assassin 	
John Hawkins 	None 	TYPE-MOON Ace Volume 11
King Arthur 	Saber 	
Medea 	Caster 	
Medusa 	Rider 	
Richard I 	Saber 	Fate/strange Fake Volume 9
Robert Bulwer-Lytton, 1st Earl of Lytton	None 	
Romulus 	Lancer 	Fate/Grand Order material I - Romulus profile
Shiki Ryougi 	None 	
==Development==
==References==
ja:バーサーカー
vi:Berserker
Category:Servant classes
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