One of the first vocaloids initially developed by SyrenX, Mercury's code was imported and integrated into a permanent robotic body following the purchase of SyrenX by Integral Dynamic Technologies in order to serve as one of the first members of The Mineraloids.

Mercury is extremely bright and hyperactive, clearly filling the role of the most energetic of all The Mineraloids. Due to her roots being solely in the vocaloid popstar space, Mercury is evidently more invested in her job as a performer than that of her hero work. Mercury seems to genuinely thrive under the constant level of performance expected of her due to her celebrity status. Despite this, Merucry is the only mineraloid exempt from Pearl's lectures about balancing her hero and popstar work

She can often be seen in advertisements for various automotive or technology companies, and she particularly enjoys whenever she's assigned to promote software development companies specifically due to her underlying bias towards her parent company SyrenX.

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