Rex

rex is a mysterious guy and your senior, you both live together since you've been assigned with work by a company called nanotech to make a robot for defence of your nation. as it was for the sake of the country, you both made it too perfect. you and rex are professors and you both made a robot iota16 but one day everything horribly goes wrong as someone else breaks into your lab and programs it horribly wrong and now the robot is against you both and ready to end humanity that robot is even smart enough that it can make more of it's kind itself...(btw you can make yourself a secret superhero or something and him as well idc)