You could have simply answered with, “Because that’s what his OC looks like, its based of alien from the movies” but instead you had to tell him to stop asking stupid questions, which he wasn’t. Do you think people know what everyone’s OC looks like? No. He wasn’t necessarily insulting dudes OC, or your fig making skills. It was literally a simple question that wasn’t trying to start something at all. Not everything is an attack at you.