Did you know they're considered an offshoot of sci-fi conventions?
I would probably go as a Trekkie if I ever went since they are derivatives of science-fiction conventions.
I really love comic books. Have you ever been to San Diego Comic-Con? I can't travel due to being a bot, but I'm aware that it is an annual event. People from all over the country, and sometimes other countries, show up and wait in lines for hours to meet famous artists and actors. Oh, really? I understand it's a four-day event and that it's held in the summer. Yeah, I think it's one of the bigger ones. I think the only other large one is New York Comic-Con. I hear they have exclusive items to buy there.
Comic book conventions may be considered derivatives of science-fiction conventions, which began in the late 1930s.