Üc207Pr4f57t9，中文朱碧・多拉（部分译名也称休比・多拉）, nicknamed Schwi (シュヴィ, Shuvi) and later re-designated Preier/Prayer, 她是特图向伊纲讲述的“不被讲述的神话”中出现的第一个机凯种。在故事中，她试图了解人类的独有语言——【心】，并被利库发现。
外貌
朱碧与白有许多相似之处，但也有一些不同，其中最突出的就是从她背部延伸出的两条尾巴，以及身体周围露出的类似于机器的特征。
她有着十分苍白的皮肤，长而凌乱的黑发（电影中为深紫色/栗色）及红眼睛（电影中为黄色，有血红色的曲线和黑色的瞳孔）。她非常瘦小。作为机凯种，她日常不穿任何衣服。
在与利库以外的人类相处的时间里，她身穿一件长袍来掩盖身体的机械部分，用长袍的兜帽遮住头部。但是尾巴没法掩盖（因为那是她的动力源），因此利库决定把它解释为装饰品。虽然她确实很像白，但很有可能特图只是把利库和朱碧描述的很像空和白，借此暗示这两对之间的联系。这一点伊纲指了出来，认为特图在故事的某些地方撒了谎。特图片刻之后便承认这个故事确实并非完全真实，而是经过了些许润饰。
人格
在与人类真正接触之前，朱碧的行为就像是刻板的人工智能。她可以很快地接收并处理数据和情报，采取恰当的行动，这是机凯种独一无二的一种特征。
但是，她好像很难理解感情和欲望，即所属于【心】的其他特征{ However, she seemed to have difficulty in comprehending emotions and desires, otherwise characterized by her as the [heart] }. 随着与利库一起度过的日子一天天推移，她似乎也有了自己的【心】。她的表情和感情变得越来越富有色彩与生气。
在读取并模仿了“内向胆小的人类种幸存者”人格，并在利库他们的聚落度过了一年时间之后，她似乎无法再将自己的性格恢复为原来单调死板的机凯种模式，而是陷入了这种设定中，用她的话说就是”思考中枢已经无法改变了“（“无法恢复原状的样子”）
特长
像其他机凯种一样，朱碧能迅速地分析评定情景，并以惊人的速度作出反应。与利库下棋的情景就是一个例子，她能记下任何一步移动，分析局面，并在之后遇到相同的情况时对比处理。
虽然她外表上看上去就是个瘦小的人类种女孩，但实际上她有着极强的力量，能够毫不犹豫地切开巨石，撕开铁板，并将一扇是她身体十倍高的大金属门举过头顶（这有点吓到了利库），还毁掉了一个森精种的图书馆。她也能以难以置信的速度快速移动，在初次遇见利库并最终返回聚落的时候，从聚落到被毁的森精种城市，骑马全力奔驰需要五天的路程，朱碧只用了数小时便抱着利库走完了全程，还是在纯粹依靠个体能力的情况下（若是使用兵装，数分钟便可以到达）。
朱碧是机凯种中的解析种，所以特别擅长分析，不过她对【心】的解析花了很久。
因为使用背上那两根连接着精灵长廊的尾巴获取动力，她不需要吃饭，也不需要睡觉。
弱点
机凯种是以链接体集合连系在一起行动的，但休比因为想要解析机凯种是否有心、自我和灵魂而由于理论漏洞产生了各种系统和逻辑错误，所以被解除了链接，遭到报废。也正是因为被解除链接的缘故，在朱碧最后的战斗中，她只能使用机凯种拥有的全27451种武器中的47种。
因为朱碧是机器人而不是真正的人，所以她不是很擅长理解别人的想法。
历史
During The Great War, she and 3495 other Ex Machina were involved in a battle against Aranleif the Ultimate and his seven followers, resulting in Riku's village being destroyed. Upon spotting Riku, she was puzzled by his reaction and decided that further analysis was required. However, her study generated an abundance of errors, which led to her disconnection from her cluster.
Meeting with Riku
Riku is searching through the Dwarves' ruin, and he sensed something. By the time he noticed danger, he is pinned down by an Ex-Machina. Realizing his doom upon violence, he surrendered himself. However, the female-like Ex-Machina surprised him with a kiss. After regaining himself, he questioned the Ex-Machina what is it up to, and the Ex-Machina answered that it is t learn the [Heart]. The two then leave the
"Ghost"
After evacuating everyone from the hideout. The remaining reformed under Riku and sworn upon the Six Pledges. They then each went out in their direction, moving behind the current of war. Shuvi remained with Riku to plant 32 Einwiek so that they can manipulate an attack to gain the Star Relic.
After they planted the 23rd and Riku's meeting with Shinku Nilvalen, Riku's body succumbed to the damage. He is treated by Shuvi, but still, lose his left arm and eyes, as well as his right arm damaged. He then rested for a day, and have Shuvi hold his hand in his rest.
Death
Despite Riku's request, Shuvi had gone out alone to execute their project. She successfully planted the 24th, but was caugt in a skirmish with Jibril, who sought to collect her head as a trophy, as the Ex-Machina have become one of the [Rare 5]. Jibril was unable to get her head in the end as she used Heavenly Smite on Shuvi, and she was completely obliterated. However, she was able to provide the data that Einzieg requires to inform Riku and protect the ring she got from Riku using magic (Kein Eintrag). She finally understood the meaning of love in her last moments before death.
你知道吗
- When Riku asks for the Ex-machina's name, she replies 'Üc207Pr4f57t9', to which Riku immediately responds by asking her for a more human name. Her first choice is Schwarzer (シュヴァルツァー) meaning 'Black One' in German, which interestingly contrasts with Shiro's name meaning white in Japanese. Eventually, they both settle with the name 'Shuvi'.
