1. These ideas are VERY fun. They sound ridiculous, yet almost kinda cool. The third one stood out to me the most, as it would actually make sense if people worshipped an alien or something. It's a nice case of dramatic irony.
2. Speaking of the last idea, I can't help but wonder if the alien has a cult or something. Perhaps a whole religion? With such a big idea like that, you can't help but wonder.