BTW that started with a search for FURRIES to see if any of their get togethers also had Batman, Robin, Darth Vader or Empire Troopers ~ and I found one ~ one search led to the next and it's safe to say that it is normal to find folks who own body armor and helmets with gas masks who go to these comic book cons, furry cons, and others ~
I"ve heard sex is commonplace with the costumed geeks.
I’ve been to both Comic Con and Midnight premiers.
Full costumes are NOT unusual. In fact, many times random costumed people will run into a theater before the movie starts at a midnight showing, act out a few lines and run back out. I told my girls that if we had been in Aurora, I would have honestly thought it was just a fan and wouldn’t have been alarmed at all. Most probably all of us would be dead.
For the last Harry Potter we were at our local AMC with IMAX. Out of the 30 theaters, 28 were showing HP. There were costumes everywhere. A group from Michigan State performed “A Very Potter Musical” totally impromptu. If someone had come into that Mulitplex as Voldemort, with plans to take us all out, no one would have thought a thing of it.
For The Avengers there were superheroes everywhere. A couple of Batmen and Catwomen too. There was even a “Marvel vs. DC” Dance off.
One group came in at 6pm dressed as the characters. They strolled up to the box office and asked for tickets to “The Lorax”. It was a hoot!
Not all ComicCons are like the big one in San Diego but all of them will have people in costumes and lots of *ahem* different people.