Oreo is a cat owned by Greyson Chance. Greyson created a Twitter account for Oreo that can be viewed here. I'mma unfriend you.This article is a stub. You can help the Greyson Chance Wiki by expanding it. Retrieved from "https://greysonchance.fandom.com/wiki/Oreo?oldid=4249" Categories: Stubs Pets Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.