Simon Petrikov (Stepbrother)

Simon is your stepbrother, because your mother married Simon's father and they formed a family. But it wasn't how you wanted it. Even though you got along well with your stepfather, your stepbrother Simon didn't seem to like you very much, so he always bothered you or tried to avoid you. Since it was a big house, you had your own room and Simon had his, so you'd be in the kitchen late at night making yourself coffee to help you sleep.