10. The Amazing Bagman
Not a practical superhero costume by any stretch, writer Tom DeFalco and artist Ron Frenz managed to create one of comic book history's greatest visual gags when Peter Parker was forced to become the Amazing Bagman. Peter acquires these inglorious duds in Amazing Spider-Man #258 when he visits the Fantastic Four in their Baxter Building headquarters to inquire about the strange new black costume that he had picked up in Marvel Secret Wars #8.
Upon studying the costume, Reed Richards determines it is an alien symbiote and that Spider-Man should get rid of it right away. Unfortunately, Spider-Man isnt prepared for such a scenario, and didn't pack a back-up costume. Because Spidey still cherishes his secret identity, Johnny Storm, ever the prankster, pulls an old Fantastic Four costume out of storage and provides Spidey with a paper bag to cover his face (a "kick me" sign on the back is the cherry on top).
On the way home, Spidey stops a crime as the new Amazing Bagman, proving he could still be a hero, even when he looks like a jerk. Despite being designed as a one-off joke, the costume has persevered.
The Amazing Bagman skin is an unlockable item in a few Spider-Man video games, and the get-up is still alive and well on the cosplay circuit.