The first big robot you have a conversation with in Xenoblade. Xorn I think his name was. Holy crap that encounter drove me almost as much as the first attack on your home town where you initially swear vengeance against the entire robot race. But the conversations Xorn has with your characters is ridiculous. An obvious sadistic psychopath. And then in the end he has a sort of heart to heart with your team. He doesn't have a change of heart or anything. Just basically expressing his surprise and sadness over not getting to eat people anymore. It's a crazy and intense conversation and makes you really glad to be able to rid the world of him..