02 - "True Ancestor"
A true Ancestor who has been twisted and warped by Monji Gatou's delusions.

Because she is first and foremost an Elemental of the Earth, her presence and activities in the Moon Cell causes excessive stress within the systems. Although categorized as a Berserker, her original class was actually more akin to "Temptress" than anything else. If she were summoned as a Temptress, her powers would be like the following:

A Blood Drinker that drains the life from her opponent; A Life Eater that consumes her foe's vitality; A Financial Crisis where electronic trading decimates an entire nation's economy; In other words, her actions, while evil and without justification, would come as naturally to her as breathing.

Although summoned by Monji Gatou, her true "Master" is apparently a young Japanese student by the name of Shiki. And on a totally unrelated note, the fox-eared Caster gets along very well with her as it is believed that they share the same basic origins.

Fate/EXTRA - Arcueid Brunestud (Berserker) Matrix