THE KNOWN: Malice has no memory of her distant past. She woke up one night in an alley, mechanical wings attached and covering her naked body. She was covered in some sort of slime and there was blood caked all around the gears in her back. She found she could talk and walk and do just about anything a normal adult could do. She found some clothes in the trash and started looking for someone to help her fit into society. She holds no curiosity about her past and has been living day to day ever since that night.
THE UNKNOWN: Now the real story is that Malice volunteered for some experiments to make her stronger. She was a 'runt' and very weak and desperate for help. Somewhere along the way the Dr. lost it and started convincing her that adding mechanical parts to her would be the only way for her to become stronger. She agreed with this mainly because he'd kept her drugged up all the time. He became infatuated with her as he worked on her and gave her 'the look of an angel'. He got busted for his work since it was, essentially, nonconsensual and the government was left holding Malice. Not knowing what to really do with her they wiped her memory and dumped her in another dimension, knowing that she'd be able to take care of herself. Her memory, quite literally is artificial. She has not discovered this fact herself, but it could easily lead her into trouble if the wrong person decided to use this unknown 'feature'.