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 had a kid in one of my classes in middle school who was trying to convince people The Undertaker (as in Mark Calaway, professional wrestler for WWF/WWE) was his uncle and that his powers were real and he had totally seen them and he was training him to do the whole lightning thing. Mmhmm yes’siree.
Pretty sure this kid ate paint too from the look of him.
I swear that kid was at every school. They did a great version of that kid in 8-Bit Christmas.