Beatrice

Beatrice (ベアトリス) is a member of the Emilia Camp and the former caretaker of the Forbidden Library at Roswaal's Mansion, until its destruction in the climax of Arc 4. She is one of the main supporting characters in Re:Zero, with an especially large role in Arc 4.

She is an artificial spirit created by the Witch of Greed for unknown reasons. 400 years ago, she was told to wait in the library for "That Person" who would grant her salvation. However, in Arc 4's climax, Subaru convinced her to live and she became his contracted spirit.

Appearance
On the outside, Beatrice seems like a lovely young girl around the age of eleven or twelve. Her face is so sweet that Subaru believed there was no heart that wouldn't melt at the sight of a genuine smile of hers. Her large sky-blue eyes have pink butterfly patterns as their irises that may have denoted her relation to the Witch of Greed. Beatrice's pale cream blonde hair is worn long and tied into frilly vertical drill-shaped twin tails that act like springs when pulled on. In the anime adaptation, the tips of Betty's twin tails are dyed pink.

Most of the time, the Great Spirit of the Forbidden Library can be seen wearing a pink frilly ornate dress with white trimmings and an exposed front that leave her legs visible, and are completely covered by pink and purple vertically-striped tights. A petite crown is also sported on the right side of Beatrice's large head, serving as a nice accessory which complements her appearance rather perfectly. Beatrice also wears pink shoes with butterfly straps on her feet, and has a large pink ribbon adorned upon the left side of her waist and a pair of similar ribbons tied at the top of her twin tails.

Personality
Beatrice generally looks down on others and is bad at dealing with people who try to get close to her. Despite being full of bravado, she's a lonely person, and is softhearted beyond her perceived stubbornness. She is affectionate towards Puck because of their similarities and favors him over the others in the Roswaal household.

She has a distinct way of speaking, adding "I suppose" (かしら, kashira) and "in fact" (のよ, no yo) at the end of some of her sentences.

History
Beatrice is an Artificial Spirit created by The Witch of Greed Echidna over 400 years ago. Roughly three years after her creation, she and Puck helped Tosca in fending off the Silver Dragons led by Falgal.

Some years later, Beatrice started frequently accompanying Echidna to the Sanctuary, where she met the original Ryuzu Meyer and became friends with her. However, disaster struck when the Warlock of Melancholy Hector attacked the Sanctuary, as he was hunting down Echidna. To protect everyone in the Sanctuary, Ryuzu offered to use herself to speed up the process of putting up the Barrier around Sanctuary–Echidna's only plan of stopping Hector. Following the creation of the Barrier and the Sanctuary's survival, Echidna told Beatrice to use her Door Crossing to connect her library to Roswaal's mansion, as she wanted the knowledge she had collected to survive. Echidna told Beatrice to protect the library until "That Person" showed up to bring her out of the library.

Throughout the centuries many people tried to take her out of the library, but they were all interested in the knowledge in the Forbidden Library or using Beatrice as she is a very powerful great spirit. Beatrice began to close her heart, doubting that "That Person" would ever show up. A couple of months before Subaru's arrival, Emilia was brought to the mansion, and with her, Puck. Though Beatrice was rejoicing at first, she soon realised Puck has changed, as he spent every waking minute hovering around Emilia and not paying much attention to Beatrice, despite their nearly identical upbringings, all those centuries ago. Not long after, however, a strange boy by the name of Natsuki Subaru, had also arrived at the mansion.

Abilities
Magic User (魔法使い Maho Tsukai): Beatrice is a master of Yin Magic and is capable of casting all kinds of Yin Magic spells, even those that have been long since forgotten by people in the present. She is capable of doing various things through it such as teleportation, freezing time, tearing space, and fixating her existence. At the prime of her power, Beatrice's magic was capable of fighting the Beast of the End. Her battle strength allowed her to easily overpower the Bowel Hunter Elsa Granhiert, a woman with exceptional lethality in her own right. However, after her and Subaru's debut battle with the Oousagi, Beatrice used up all the mana she had accumulated in her four centuries of residing in Roswaal Manor, making it impossible for her to use any spells aside from the most basic ones, rendering her borderline useless in combat.
 * Shamak (シャマク):Beatrice using Shamac.gif One of the most basic Yin Magic spells, which even Subaru could use until the collapse of his gate, was Shamak. When cast, a blanket of black smoke would erupt from the user that would cover a significantly large area. Any target engulfed by the smoke would completely lose their spacial awareness. Under the spell's effect, the only thing the target could sense was the ground under their feet and any damage done to their body. Although it was a low-level spell, it proved an effective smokescreen when retreating. Naturally, due to her mastery of Yin Magic, Beatrice is capable of conjuring Shamak.
 * El Shamak (エル・シャマク): Beatrice's target becomes unable to control their bodies while under its effects. This magic was cut from the Light Novel.
 * Ul Shamak (ウル・シャマク): Covers the area in darkness making the opponent unable to tell anything while under its effect, such as where they are sitting or standing, whether or not they are conscious, whether they are breathing in or out, dead or alive, whether they still retained human shape, how to move their arms, who they are etc. Those affected by it can be snapped out of its effects by being hit really hard.
 * Al Shamak (アル・シャマク): Al Shamak is capable of bending space and time. It is capable of sending its target to a different location in the world or, in some cases, even to a different dimension.
 * Door Crossing (扉渡り Tobirawatari): Door Crossing connects its space to the interior of a single building, otherwise to the place Beatrice most recently knew. It can't connect over especially long ranges, however even if it's long range, if she has deep ties to a place, Door Crossing can connect to it. She can also use a limited version to teleport things.
 * Infinite Corridor (無限の回廊 Mugen no kairō): Beatrice can utilize her mastery of Yin Magic to manipulate the fabric of space. She can create a loop in space that ensured an individual walking through a structure would move in a loop, meaning that, if they were walking down a corridor, it would seem endless. The target of this spell can break out of the loop by finding the correct door/and or pathway to walk through, Beatrice used this ability to annoy Subaru on his first entry into the mansion in Arc 2.
 * Barrier Conjuration:Beatrice - Force-Field Generation.gif Using Magic, Beatrice could conjure a wall of invisible magical energy. The wall would deflect any magical attack that fell upon it, keeping the caster and their allies safe from physical damage, Beatrice was first seen in Arc 2 generating a Magical Shield to defend against Ram's Wind Magic.
 * Minya (ミーニャ): Beatrice's magic that creates stakes made of crystallized mana covered with light purple flames. They are strong enough to penetrate defenses. Any stakes in the air explode and release smaller stakes that fly in all directions which then rips its targets apart. Beatrice, just like Puck, can sense when an individual has been infected by a curse. She can tell where on a person's body a curse has been placed and can subsequently remove it. However, Beatrice can only remove a curse if the caster has yet to activate the curse they had placed on a person. Furthermore, she can't tell the effects the curse would inflict on an individual without observing the curse in effect .

Mana Drain: Unlike most spirits, Beatrice does not absorb Mana from the atmosphere. Instead, Beatrice obtains her Mana from living creatures. By touching an individual, Beatrice can absorb the mana stored in their gate, bolstering her own supply of Mana in the process. The individual effected by the technique would become physically fatigued if enough of their Mana was drained. By absorbing a person's mana, Beatrice could also tell to some extent whether the target had hostile intentions towards her or not, She is the only one besides Puck that knows this skill, though Reinhard has shown a similar ability at the end of Arc 1.

Contract Spirit: Beatrice is currently contracted with Subaru, though according to her, he isn't a true Spirit User. She also has a terrible mana consumption rate and formerly got around this by draining mana from people in the mansion while using the library as a medium. As she is an Artificial Spirit, she also has several conditions Subaru is forced to follow:
 * Subaru cannot form a contract with other Spirits.
 * Beatrice cannot restore mana on her own.
 * Beatrice cannot use the mana in the atmosphere.
 * Beatrice can only drain mana from Subaru.

Vast Intellect: Being over 400 years old, Beatrice has vast amounts of knowledge on a variety of subjects, and is always reading books in her library. Beatrice is also really excellent with magical power theories and using them. Her knowledge on Yin Magic far surpasses Roswaal's own.

Unknown Ability In Re:Zero Prequel: Loving the Days Gone By, Beatrice can turn food into mana. The process which she does this by is unknown.

Equipment
 * Book of Wisdom (叡智の書):Beatrice's_Gospel_ep.32.png 400 years ago, Echidna gave Beatrice one of the two complete copies of her Book of Wisdom. The Book itself looks exactly like the incomplete Witch Cult's Gospel although this one was far more specific, when it came to guiding the owner towards their desired path, resembling Echidna's very own, perfect Book of Wisdom more than the aforementioned Witch Cult's Gospels. Soon after Beatrice received the Book and locked herself into the Forbidden Library, her Book's pages turned blank, leaving Beatrice in the dark for centuries. At last, Subaru saved Beatrice from the burning library, in which, her Book of Wisdom was completely lost.

Trivia

 * Beatrice shares the same attribute with Subaru, which is why they're highly compatible in terms of being a spirit and contractor.
 * The crown on Beatrice's head is actually a small detail added by the illustrator, and wasn't planned by the author.
 * The author has stated that her birthday is a spoiler.
 * Beatrice kept her Gospel hidden within the stepladder where she was normally seen sitting.
 * Just like Emilia, Beatrice is tone deaf.
 * The author once mentioned that Beatrice has a small chance of beating Puck in a serious fight though Puck is the most likely victor.
 * Beatrice loves everything that tastes sweet.
 * In Arc 5, it is mentioned that Subaru has given Beatrice an allowance, though it isn't specified how much the allowance is.
 * She's one of the very few people in the Re:Zero world who can somewhat use Teleportation magic. Alongside her, Echidna and unnamed Witch Cult members, no one else holds the capabilities to display such type of magic.
 * The first living being Beatrice killed was a Silver Dragon, roughly three years after her creation/birth.

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