Star trek to the win
This is video about people have weird outfits like Spock of Star Trek. This is not like Halloween, which basically is all about scary outfits. People who do these things at Comic Con are more friendly and it is surprising that two strangers become comfortable with each other very soon with their outfits depicting their passion.
The costumes comes in varying complexity, some outfits take around 20 hours to don, still people seem to love such costumes and outfits. The choice of so many characters make this a cultural mingle and the participants enjoy this.