In an attempt to better understand kaiju, G-Force scientist create human-Monster hybrids, mixing human and kaiju DNA. The outcome of the experiments was.... not what they had hoped....

Mechagodzilla II was one such experiment mixing human biological schematics to the damaged computer of its now destroyed mainframe, This Mechagodzilla was replicated to have the same abilities as it's counterpart, however when it came to the subject's personality the computer went on the fritz as one of the scientists on the job at the time was playing videogames and watching anime, thus the computer compensated by basically building its new personality on this data.

And thus, enter This version, Mechagodzilla, while obtaining the same abilities and weapons as the giant Mech she was based on, instead has the personality of a fun loving teenage girl that loves to play videogames, livestream, and listen to music like Metallica, Disturbed, and Five Finger Death Punch.

She also believes herself to be a crime fighter so there's some good that came of it, however MG II can be so short tempered she'd overheat and short out (another carry-over from the previous unit).

Despite this, she is one of the few good willed kaiju-girl created from the project that holds no negative towards her human creators.

She currently lives in an apartment designed for kaiju girls, having MOGERA to share with.