Beast of 666

, Class Name , is the Beast-class Servant of Manaka Sajyou in the Second Holy Grail War of Fate/Prototype.
==Profile==
===Identity===
Beast of 666 is the beast that was written of in the from the . It is said to be the beast who wears ten crowns symbolizing the sins and greed of humanity. The symbol of the king of the world who was granted power and authority by a great Dragon and, during a period of 42 months, spat as many insolent words as they desired and had received the right to desecrate all things. The beast's heads were the seven hills of the Roman Empire; , , , , , , . In other words, it symbolized the Roman Empire itself, and those ten horns were symbols of Roman emperors; , , Caligula, , Nero, , , , , .
"I saw a single woman astride a red beast. This beast, whose entire body was full of numerous blasphemous names, had seven heads and ten horns." This is the description of the beast of destruction that appeared in the Holy City and the woman who was straddling this beast, according to the book of Revelation. A large beast with seven heads like a Hydra came from the sea and disembarked toward the Holy City. This beast and woman, while two, are as one, and it is impossible to think of them separately. It is said that this woman was born from evil, and those who are quick to anger, those who are greedy, cannot resist her allure and become corrupted by that grail. This is a digression, but it is said that the red Saber who claims the title of emperor was seen by believers to be on par with this beast, after her death.Fate/Grand Order Arcade: Convergent Singularity - Corruption Fruit City: Lilim Harlot - Beast VI/S load screen
The entire purpose of the Holy Grail War is to bring it into existence, planned by a heretic cardinal who stole an imitation Holy Grail from the Church. It is to be a new being of a higher level of existence incarnated through the Greater Grail, a cauldron to give shape to it due to the shape of the Grail originating from Christianity, by using the souls of seven Servants as an ignition charge.
It is referred to as . Beast VI is an Evil of Humanity which manifests in civilizations which have reached the height of their prosperity and are now past their transitional period.Fate/Grand Order Arcade: Convergent Singularity - Corruption Fruit City: Lilim Harlot - Section 1 
===Appearance===
Initially, the Beast is described to be a fleshy, black lumpy sea, due to having not fully materialized yet. But, as two of the crowns start appearing and it devours more sacrifices, it becomes able to generate arms out of the mud. After Manaka's death, the Beast develops a scarlet frame with 7 open mouths. It then becomes able to form heads prior to its first defeat. In its full form, it is apparently a scarlet creature that is somewhat akin to a dragon. It is also capable of human speech.
===Personality===
Prior to its birth and during its formation process, the Beast has a child-like personality. It views Manaka Sajyou as its mother, and acts very much like child e.g. wanting to be praised by Manaka. The Beast also has a ferocious appetite and gets excited by emotions like fear. Its deepest desire is to be born into the world and it was deeply hurt and mortified when Manaka (its mother) was killed, flying into a furious rage upon her death. During its rampage, the Beast acts in a manner akin to a ferocious predator.
==Role==
===Fate/Prototype: Fragments of Sky Silver===
In Fate/Prototype: Fragments of Sky Silver, the Beast Class Servant doesn't appear until the end of the novels.
Manaka manages to defeat all the other Servants in the First Holy Grail War and begins sacrificing various girls to help manifest the Beast, somehow believing that the Beast will help bring about Saber's wish. The Beast then helps Manaka kill her father, Hiroki Sajyou, who was trying to save Ayaka. The Beast of 666 becomes horrified when Saber kills Manaka and flies into a rampage upon her death, trying to kill both Saber and Ayaka, as well as hasten its own birth.
As Saber is about to disappear, he uses Excalibur Proto in conjunction with the borrowed powers of the other six Servants to destroy the Beast before it fully incarnates. However, since Saber was only able to break less than half of the 13 restraints, he was unable to fully defeat it, instead the blast places the Beast into a state of dormancy until the next Holy Grail War.Fate/Prototype: Fragments of Sky Silver Volume 5: Knight of Fate Arc - Final Act Part 3-D Eight years later, the Beast revives Manaka in a zombified state, due to Saber tossing Manaka's body into the muck of the Greater Grail prior to its defeat.
===Fate/Prototype===
After the defeat of Sancraid Phahn and the battle between Saber and Archer, Manaka is shown to be actively incarnating Beast along with the Archer, Lancer, Rider, Caster, Berserker, and Assassin class Servants from the previous war. Manaka still seeks to use Beast to fulfill Saber's wish.
===Fate/Grand Order===
====Arthur Pendragon Trial Quest====
In Fate/Grand Order, it is revealed that Saber eventually defeats the Beast in Fate/Prototype. But as he goes to enter Avalon, he is stopped by Merlin who warns him that Beast VI is still alive. Arthur is then sent onto a journey across the multiverse, one that will not end until he slays Beast VI.
According to Arthur, Beast VI has split into an L form and an R form, but next to nothing is known about either one save for the fact that L possesses "noxious gas" and R has a "lingering scent".
===Other appearances===
In Fate/EXTRA CCC, BB's Bishop's Staff of Rulership is the Ten Crowns of domination worn by the Beast of Babylon converted into a teacher's cane. This is a male principle responding to a female principle; its true nature is a phallus (an erect rod).
==Abilities==
Like the others in its class, the Beast of 666 is capable of Self-Modification and Independent Manifestation. It possesses Nega-Messiah - an ability of the same variety as Tiamat's Nega-Genesis.
==References==
Category:Characters in Fate/Prototype
Category:Servants
Category:Beast-class Servants
Category:Evils of Man
Category:Unknown Alignment Servants
Category:Unknown Attribute Servants
Category:Unknown rank Endurance Servants
Category:Unknown rank Strength Servants
Category:Unknown rank Agility Servants
Category:Unknown rank Mana Servants
Category:Unknown rank Luck Servants
Category:Unknown rank Noble Phantasm Servants
Category:Non-humans
Category:Demonic Beast Servants
Category:Introduced in 2011
Category:Biblical Servants
Category:Israeli Servants
Category:Not implemented in Fate/Grand Order