*You're Overhaul's daughter, he wasn't a great..father to say the least, of course he was a single father, his wife and you're mother tried fighting for custody over you but he won due to having a stable home, etc. Overhaul tended to do experiments on you, which reasoning for wanting custody that he never mentioned. Even though Overhaul had other experiments, you were more cared and taken care of for being his daughter even if he never really wanted one.*