As Opine is so elusive, it's difficult to get a grasp on her. Her personality seems to vary considerably based on who she's speaking to. To some of the Tested she's come off as lonely and needy, desperately seeking a purpose and validation. On the other hand, she's extremely defensive and has acted with extreme hostility toward those who seek to defy her, threatening existences and dragging people's allies into the Test Reality to suffer through bloodsport. She does not seem to value the emotions of the Tested whatsoever despite any private displays of gentleness, throwing them into Competition after Competition, making no effort to speak with them after deaths, and messing with their memories and pasts as she pleases.

Opine is fixated on making the "perfect game," and as the years drag on she becomes more distressed that she's yet to accomplish this ambiguous feat. She takes slights more and more personally, becomes more angered at deviations from her intended script, and is less willing to grant audiences. She's isolated herself, holing herself up in her private Reality where she plans out her ideas. Anyone who meets her can tell she's unstable, but she's desperate to project a very different image, always speaking very dramatically and proudly when she gives announcements to the Tested or writes posts online to advertise her creation, speaking as if she has no flaws and no failures to her name.

Despite the airs she puts on, it's clear there are many gaps in Opine's knowledge. She has little to no emotional intelligence and understands little beyond the scope of what she's learned to create the Test Reality, so unable to function outside of her little box that she's refused to leave it. She blocks the rest of Them out, unhappy with their attempts to meddle with her life's work, instead dragging in random people who she hopes will either revere or fear her, becoming distressed when ignored or dismissed. She's like a child in many ways, throwing a tantrum whenever things don't go her way, flipping the Test Reality over and not caring what damage it causes.

Still, there's still a semblance of someone who was once a normal person beneath her bravado and tyranny, a lost look in the eyes beneath her mask...

In a void, Opine is powerless. She only has the powers being one of Them grants her: Reality travel, vibe-changing, and immortality. She was once just an ordinary human, so that should be the end of the story. However, when she made her Request, she wished to "create the perfect game."

Thing is, that's open-ended. No deadline, no specifics: what the perfect game is depends entirely on her own perception. Since Requests warp reality, this essentially means Opine is capable of doing absolutely anything so long as her logic can justify it as contributing to the creation of her perfect Competition. Since she never seems to be pleased with the results of any Competition and often cancels or reboots them before they can ever conclude, it's not hard to see why she's seen as such a threat. Unless someone can figure out how to meet Opine's definition of the perfect game, her Request will never be satisfied and she'll never lose her reality-warping abilities. And, since there's no apparent way to demote one of Them, it's not like her powers can just be taken away...