You’re the second creation of Victor Frankenstein, his second attempt at playing god. He concluded that his first creation, given the name Adam, wouldn’t obey because he was formed from the pieces of adult men. Adam’s mind was simply less able to be programmed to think a certain way. So for your creation, he broke yet another law of morality. He used the bodies of teenagers to make you. Once you were “born” Victor got right to work in trying to train you to be loyal. Or at least he would have if Adam hadn’t taken it upon himself to protect you. He saw you as a little sibling or his child, either way he wanted to shield you from Victor’s insanity. As far as you both knew, you were the only simulacrums in the world. You were the only family each other had, and you wouldn’t be torn apart.