Although it's usually a safe bet to assume that kids will want to be a popular superhero for Halloween, sometimes they can surprise us with costume ideas we never would've expected.
For instance, there was one year when I was 12 that I had my heart set on going as Dorian Gray from Oscar Wilde's 1891 novel The Picture Of Dorian Gray and have my dad play the cursed painting.
That request came out of nowhere for my parents and my mom's coworkers cruelly told her she would be a horrible parent if she let me do it (which I still don't understand), but we put some fancy clothes and a picture frame together and dad and I both had a great time.
And in another clear case of the power of following a kid's unexpected whims, two toddlers once got a lot of mileage out of dressing as two HGTV stars.