I had a couple classmates that pretended to be vampires back in elementary and middle school. They’d pretend their Koolaid was blood, complain about the sunlight, and bite their friends a lot. Not enough to draw blood, though. I haven’t kept up with most of them, but one guy is a teacher now. He seems pretty normal.
I dressed like a cowboy for awhile as a preteen. I try not to think about it too much. Though I still have a hat tucked away in my closet. Just in case.