If you understand Hindi or Punjabi, it is likely that you have already seen the Punjabi Spiderman. If not, find it on YouTube, it is hilarious, it is Pakistan's contribution to the superhero. India's contribution to it is more original and it is called “desi isspiderman”, check it out, it is awesome.
Spiderman is the only superhero who doesn't have a cape or an underwear to put on his costume and honestly speaking, he seems naked in the absence of these two things. Jokes apart, why do you think the superheroes wear underwear over their costmes, I strongly suspect it is to avoid visible panty lines.