New theory: The mastermind villain is Shiro's daughter
Mainly because we're closing in on the end of the story, and since she isn't even a potential LI like Josie, you have to ask why the Dev went to all the time, trouble and expense of introducing her to the story?
She has to have something to contribute for the Dev to have felt it was worth the time and money to buy her DAZ model and work her into the game. But we've seen nothing of her since and she did not show even a hint of attraction to the MC so she's not an LI.
Working backwards from that logic, I then ask myself... does she have Motive, Means, and Opportunity to kidnap Queen Unbreakable? And the answer is Yes, Yes, and Yes.
The same motive, means, and opportunity her father has. To find the man who killed her mother, whom she suspected Queen Unbreakable knew about. With access to her father's tech(and maybe his powers too? Unclear on whether or not she is also Metahumanly intelligent) and her company's money/Hero association records to hire criminals, she has all the ingredients needed to pull this off. Maybe on some level she even blames Queen Unbreakable. Both for failing to prevent her mom's death and failing to bring Hardlight to justice resulting in a lifelong obsession for her father that made him neglect her.
The only question left is whether her dad is in cahoots with her, or he just failed to realize he unwittingly transferred his obsession over to his daughter and she followed that obsession down a much darker path than him.