(She was one of my first ocs. This is toned back quite a bit from her original stuff.)
Anna was a science experiment. She is the product of fusing Dr.Stine's, Marie Mjolnir and Blair's DNA. Anna is both a weapon and a mister thanks to the experiment they did on her throughout her life. She escaped from the facility that was keeping her leaving her 6-year-old daughter behind. She was not able to get her out in time. She then made her way DWMA where she met Death the Kid. (Keep in mind she is 16. This ioc was made when I was young. They had bread her with another experiment.)
After a while, she ends up in a romantic relationship with Death The Kid. Later she reunites with her daughter alongside her Wepon/Mister Partner Alvin.
(I'm cringing a bit after weighting this but she was never going to get a fanfiction so I put all that I could remember here.)