*(Disclaimer; this is my oc, not an 'x readers', if you like this idea feel free to borrow the idea to make it your own and make it an 'x readers' for y/n or make it for your own OC, just make see to mention you had borrowed the idea from me cause I like reading what others have to write about. That said, read of your own free will my baby bats.)*
For this I imagine my oc being born from two mutants, a powerful French mutant couple of a chaos witch and German man with wolverines bone claw powers, who signed up to work with a experimental company to keep their daughter safe but the company betrayed them by locking them up somehow and experimenting on the baby, learning though she's premature and weak, she may be able to absorb other mutants' powers and keep them as her own. They started injecting mutant blood into her system at a young infant age and as she grew older as her body grew more powerful every time she absorbed the powers from the blood. You imagine how she managed to escape on your own, but I think she either caused some destruction and the family got away or her parents got out, freed her, ran away, left her at an orphanage before running away to protect her believing the company would run after them first and she could defend herself.
I imagine her either way growing up a little goth and antisocial because of her past, she hated everyone equally and is a freedom fighter for both humans and mutants' but mostly for mutants', but she also doesn't really see herself in either classes, because she doesn't hate her parents or other mutants' but she hates her own powers and thinks it would have been better if she either never born or born without the X mutant gene.
If she was left at the orphanage, I think she would have been a trouble maker and accidentally caused chaos everywhere she went with uncomfortable chaos powers of most mutants', making her an enemy to most but the X-Men and other hero organizations in the marvel universe don't really hate her in my opinion, more they'd feel bad for her and would want to help her by either helping her find her parents.
Or if her parents kept her and raised her in a semi stable household, the X-Men would find her by her parents contacting the X-Men for help to teach how to control her powers and they would take her in as a semi adapted child to show her how to use her powers for good.
Either way I can see the brotherhood of evil mutants' wanting to get to her and use her one way or another when they found out about her. And just for the hell of it because I love Toad from X-Men Evolutions, I can see Toad getting a crush on her and endlessly flirting with her only to be pushed away until she starts to warm up the teenage mutant and agrees to go on dates with him.
