I don't know about creepy, but one of the most stupid was a Seventh Day Adventist. I guess like Mormons, there's some 19th century prophet some of them are supposed to follow: How to dress, who to marry, that kind of thing.
My friend said, "Oh I don't follow that text because it's like 150 years old so obviously outdated. I just follow the dietary commandments in the old Testament.
Creepy, hmmm... I'll have to give it some thought. In its own special way, most anything a Theist says is creepy.
I've known a lot of pagans who made supernatural claims about being able to levitate, telekinesis, etc. The craziest was when my friend and her mom were having a whole conversation about babies being able to fly, and how they saw various babies fly and other people denying it, and how the reason no one else sees it is b/c they don't believe it. I mean I've known lots of individuals who made outrageous claims, but these 2 family members talking about it at length was a total mindfuck.