Had an idea for...well, not technically an oc, perse, but a character so changed and fleshed out that she might as well be, connected to The Grid.
So you know how the entire city of Inkopolis got glitched out of existence during the Emulator Arc? Yeah, not only did not everyone manage to evacuate in time, but not all the survivors got out unscathed. Enter Piper Fuji, the former leader of Killer Ink (you know, the main enemy team from Meggy's Destiny?). She...well, she only mostly made it out. ended up with a massive wireframe scar all up and down the right side of her body and face (including over her right eye), most of her right arm got glitched away along with the city, and irony of ironies, her species flag got corrupted and now she's a human.
Ever since then she's been stuck in the Mushroom Kingdom, just doing her best to live her crappy new life in her crappy little apartment and the string of crappy dead-end jobs she can't seem to hold onto in a world that doesn't remember her and wouldn't give two shits if it did. And then one ordinary shitty day where yet another job application got rejected and she came home to find that the power's been cut off even though it's still over a week until the rent's due, Jered, she finds a black card at the bottom of her grocery bag that has the name and logo of that new tech company that funded that dumb car race a month ago in red on one side and an address and phone number on the other.
So of course she goes to check it out because it's not like she's got anything to lose at this point, and she actually did major in computer science before she dropped out of college to focus on Inksports so whatever they've apparently scouted her out for won't be too out of her wheelhouse, and even if she just ends up as a janitor or test subject or something she really needs this job.
Of course it turns out that the Grid isn't just an up-and-coming tech company, but is in fact...well, you know what it is, I have a whole post explaining it. The Grid took an interest in Piper because they're aware of her skills and loose morals (both because they've seen Meggy's Destiny and because of Astra actually looking her up), and after finding out what had become of her wanted to give her a chance at a better life. The fact that at this point in her life nobody would miss her if she vanished off the face of the Earth was admittedly also a notable factor in their decision.
Anyway, that's how she goes from a racist asshole sports star to a depressed disabled refugee to a cyborg thief corporate superspy working for the masterminds of a multiversal conspiracy.
(also if it's not clear I made up her name. she didn't actually have one in canon.)