Cosplayers, the grown-ups who dress up in superhero and science-fiction costumes for fun, are proud of the intricate, authentic-looking garb they flaunt at sci-fi conventions, community gatherings and ...

I wanted to saunter through the party in the Bride’s iconic yellow-with-the-black-stripe jumpsuit, pointing my plastic katana at the boys who struck my fancy and—emboldened by portraying such a ...