LOL
We have some wonderful, awesome oldtimers in our group, but we have some tyrants, too. If we can't get someone to talk to the tyrant and ask him to reign it in, we would take a stance of amused, loving tolerance. We'd make gentle corrections to his comments in open meetings. We'd warn newcomers about him, even if we had to chase them down outside to tell them to ignore him. I've chase plenty of newcomers down when they stormed out of a meeting for various reasons, including this one.
(It's not always a guy, BTW. We have a couple of women oldtimers who are real pieces of work. They'll make you thank God that you're not their family members.)