But I never knew there was a way to connect the things I was nerdy about with costuming,” she shares. “I feel like there is no stronger way to show how much you love or connect to something than putting hours of time into creating a costume so that you can be them,” she says. Adult sexy Halloween party cosplay costume. Batman is not only the king of comic book superheroes, green lantern costume but he’s also one of the most popular cosplay ideas.