"Oh, I didn't meet any, personally. But they were certainly on the news. An army of a species called the Chitauri attacked New York through a portal that one time in 2012, and there's a colony of Asgardians in Norway right now, after Thanos destroyed their homeworld. Oh, right, Thanos, so I guess that's three species, but I don't actually know what Thanos was, come to think of it. They called him a Titan but who knows if that's a species or a title? Not me."