Berserker (Fate/Extra Rani route)

Berserker is the Servant of the fanatic Monji Gatoh, whose goal is to turn her into a "true deity". She only appears in Rani VIII's route as an enemy Servant.

Appearance
Her appearance is base to her counterpart but her left eye turns purple when she is with her master.

In the 4th week on the first day, you have to choose between Rin/ Rani.

Choose Rani to open the path to the fight for Aruceid.

Personality
Her personality is different from her counterpart when she is with her master, as she has lost her mind and only obeys her Master's orders. When her Master disappears, she reverts back to her normal self.

Vampire
A demon that sucks blood.

Under the assumption that it is not a living being created by the Lord, it was painted as an easy to understand antagonist by a certain religious view. Described as drinking the blood of humans, not growing old, being immortal and accompanied by many beasts.

True Ancestor
In a case where those who suck blood are classified among the Blood-Sucking Species, that which became the foundation for this...this is the general term for the life form pressumed to be so.

The True Ancestors are those who embody the consciousness of the planet and, in accordance with the legend, suck the blood of humans out of fun.

Background
She is a survivor of the True Ancestors' royalty, that are the foundation of the Blood-Sucking Species...or at least it seems so. Her facet as a vampire is strong, but she is also a kind of Elemental that dwells in Earth.

It becomes easier to understand if she is regarded as the personification of a natural phenomenon, such as a typhoon or an earthquake. While rumored to be a production of the Moon Cell,after the battle she comes to her senses, tears the virtual world with her claws and simply jumps out of scene. Most likely, is the true Arcueid and not data from the Moon Cell.

True Ancestor
A True Ancestor that had Monji Gatoh's mistaken interpretation pushed onto her.

Because she is an Elemental of the Earth, it seems that her activities inside the Moon Cell becomes an excessive stress.

Originally, her Class was not Berserker but rather Funny Vamp.

If she was summoned under that Class, it seems that - just like

a Blood Drinker that sucks the blood of the opponent;

a Life Eater that robs physical strength;

a Finance Crisis that consumes electronic money;

- she would behave innocently and naively as an evil woman (vamp) that destroys men.

Her real Master is apparently a "normal" high school boy, or something.

This is a digression, but the fox-eared Caster gets along with her because they seem to be of the same kind, or so it has been conjectured.

Her powers are severely restricted by being summoned as a Berserker class and by having Gatou as her Master, to the point where her EX ability becomes useless.