I looked it up and this is what it said: "Even though for the most part, Greg uses Rowley like a slave or something, he shows emotion to his friend. And Greg, unlike most sociopaths, is able to like people, which is something sociopaths shouldn't really have. So in conclusion, Greg is leaning towards being a sociopath, but he is not fully."
So I guess he's kinda but not fully a sociopath? 🤷