The story I am trying to find may be a crossover with a comic superhero universe. I can't remember which one, or if it was "original" superheros. Anyway, in this story, superheros were discovered to be real, and Sam and Dean pretend to be superheros instead of just hunters. People trusted superheros, after all.

It did have Sam and Dean meeting some of the superheros, but I cannot remember which ones. I think it was a bit of a crack story, and I'm fairly certain it was gen.

Any help will be appreciated.

Edit: Found! Link in comments