Whoever he or she is, he was somehow credible enough that Andrew gave him mod without any trouble, and in fact actively defends it. I don’t remember ever having a user here having the name RayCat but I could just be misremembering. So my guess is, if they aren’t actually RayCat, they’re somehow Andrew’s friend from a while ago. And the only thing I have from him that could be considered a username is MEME_King.