Berserker (Fate/Extra Rani route)

Berserker (バーサーカー), also called White Berserker, is the Berserker-class Servant of Monji Gatoh in the Moon Cell Holy Grail War of Fate/Extra. She only appears in the Rani route in contrast to Berserker of the Rin route.

Identity
Berserker is Arcueid Brunestud, though her appearance is "fan service" due to the existence of Moon Cell contradicting the events of the world of Tsukihime and making them impossible to coexist. She is the lone survivor of the True Ancestor's royal line, believed to be the foundation of the vampiric species. Though her lineage as a vampire is her most outstanding trait, she is an Elemental of the planet more akin to a destructive force of nature like typhoons and earthquakes. True Ancestors are the embodiment of the consciousness of the planet, and they are believed to suck blood from humans for pleasure.

Though there are rumors of her being a creation of the Moon Cell, she was brought from Earth by Gatou. Her real Master is a young boy in a school uniform or something of that nature.

Appearance
Berserker is a pale woman in plain clothing with vicious, crimson eyes. Differing from her normal appearance, her long skirt is ripped, her hair is disheveled, and the iris of her left eye is purple. Upon regaining her senses, her hair and eyes return to normal.

Personality
Despite being a Berserker, she is not overly battle-hungry, only battling as dictated and speaking taunting phrases occasionally. She mostly remains impassive while Gatou interprets her will in various ways as his "god." He believes her silence to be a trial for him, and he declares her to be the creator of the universe and constantly spreads false information about her. Though not fully cognizant, she awaits being freed from her mistake in following him. Due to sharing the same basic origins, it is believed she would get along with Caster.

Upon regaining her sanity, she shows her whimsical nature. It can be said that she simply got lost and wandered into the tournament. She speaks to Hakuno Kishinami as if they are friends, smiling all through their conversation. She would have originally been given the class designation Funny Vamp (ファニーヴァンプ) due to her nature, emphasizing her nature as a "Blood Drinker that drains the life from her opponent", a "Life Eater that consumes her foe's vitality", and a "Financial Crisis where electronic trading decimates an entire nation's economy." Though her actions are evil and unjustified, they are a naively natural act like breathing.

Fate/Extra
Berserker only appears in Rani VIII's route as an enemy Servant. She is first encountered in the arena with Gatou, and she simply remains impassive without provocation from Hakuno Kishinami. Gatou interprets that she has declared the area to be a holy training ground, so they leave without issue. During a later moment of reverence, he gives details about her Mystic Eyes while besieging her to use them to guide him. That detail is unable to determine much about her identity due to the large number of references to Mystic Eyes for various heroes.

After Kotomine gives a hunting challenge to Gatou and Hakuno, Hakuno emerges the victor. Gatou reveals his goal in spreading his god to the world, and also reveals her nature as a True Ancestor. They proceed to battle, but Hakuno's Servant emerges victorious. They are granted the knowledge of her Noble Phantasm for winning, and proceed to the final battle in the Colosseum. Gatou explains more of his philosophy and reasons for his actions before the battle, while Berserker simply stands by without speaking.

Berserker is defeated, and Gatou fades away while pleading to hear her voice. She does not disappear like other Servants due to her nature and instead regains her sanity after Mad Enhancement fades. She explains Gatou's failing in attempting to make her into a god, bidding him farewell with a promise to see him in his next life since he believes in reincarnation. She cannot remember her location and feels the Moon Cell attempting to reject her. Easily opening a portal out of the Moon Cell, she talks directly to Hakuno, explaining that it was second time she has almost been killed, and with a smile, offers make them pay for it should they ever seek her out. Bidding them farewell, she leaves through the portal

Fate/Extra CCC
Berserker does not make an appearance in Fate/Extra CCC, but her Master is taken to the Far Side along with a number other Masters and Servants. When describing how he lost his Servant, Gatou says that she spoke a "prophecy" of "Wow, you’ve got no integrity" and left him after somehow regaining her senses.

Abilities
Berserker is normally an existence a Master would be unable to handle, but Gatou's misunderstandings and being placed in the Berserker class have given other Servants a chance to match her. True Ancestors are natural phenomenons, while gods are sentient beings with values able to be understood by humans. Gatou wishes to make her a real god through spreading his worship, but something that is real cannot become something that is false. Normally a spirit of the planet, the planet itself in a sense, her status has fallen from planet to god due to Gatou equating her to a god.

She is an Elemental of the Earth, so her presence and activities in the Moon Cell cause excessive stress within the system. She feels her body tingling with rejection simply by existing there. She can normally treat the Moon Cell like a Reality Marble if she wishes, but her status as a Berserker had makes that impossible. Once free of Mad Enhancement, she easily creates a portal by slashing the air with her claws. It is the perfect size for her to pass through, as if the dimension acknowledges her right to do so or holds no right to stop her. She is not all-powerful in a world where the information world has become more mainstream than the physical world.

Legends becomes truth in the information world, so the deifications of natural phenomena, the "Gods", often have powers greater than that of the original natural phenomena. She is still on the "broken level" with her sanity restored, easily trumping regular Heroic Spirits and allowing for her authority of "reducing all abilities of any target to a sixth if the stage is the moon" to act as a countermeasure against enemies of the same level. It is a conceptual numerical alteration that is unavoidable on the moon, so even BB after becoming the Moon Cell itself is subject to the restriction. Within Extra and CCC, she is the almost the only one capable of bringing Amaterasu "to circumstances where its possible to defeat her, however little the chances may be."

Combat
Twisted and warped by Gatou's delusions, she is unable to manifest most of her abilities. She utilizes her claws in close combat, Der Mond (デア・モーント) for regeneration, and Rail Zeppelin (レール・ツェッペリン) to increase her strength. The ability Gnaden Sturz (グナーデン・ストース) has her leap into the air, form a crescent moon, and slash the opponent while repeatedly yelling "fake." Her Noble Phantasm is Blut die Schwester, which conceptually reduces the abilities of those within the Moon Cell.

She would normally be strengthened by her Ultimate One skill, allowing for her statistics to be slightly higher than her opponent due to receiving backup from the planet. If she is on Earth or facing a product of the Earth, it will activate without penalty. Gatou's misunderstandings have sealed the skill, though being on the Moon Cell would provide restrictions as to its duration even if it were to function. It also seems there are beings residing there of a scale that it cannot exceed. Her Mystic Eyes have been reduced two ranks due to Gatou's misunderstandings. Her Mad Enhancement has also been decreased two ranks, making the impairment on her high-level cognitive thought more severe due to his incompetency.