Oh man favorite superhero...just one? One? One. I can't do just one so here goes
Okay less than I thought. That list would be longer if it was for favorite super villains, quite honestly.
I do wear nail polish! A lot, actually. My nails are painted white and cut short right now but I usually wear a lot of dark polishes or the occasional bright red. When I have time and patience and my nails have grown long enough I do french tips and see how long they last without chipping.
I'm real particular about taking care of my nails and cuticles because I used to chew on them real bad when I was younger and it became painful. I clip hangnails and rub vitamin E on when they get dry, and I use a really nice clear coat that makes them really strong and hard and they grow faster. Even my nail polish remover is special to promote growth and keep them from getting brittle.