Board Thread:Questions and Answers/@comment-24962145-20140519211650/@comment-4651179-20140519220731

Yes. Most flying super heroes use capes just because they look cool (they do look cool, tho). I can't think of any hero other than Doctor Strange whose cape allows him/her to fly.

Many non-flying heroes also use capes for show, like Emma Frost, Scarlet Witch or Doctor Doom (not a hero but worth mentioning as an example). There are still some non-flying heroes whose cape has a function, Cloak's cape is kinda part of him, and Moon Knight uses it for gliding.

So, it's safe to assume that 99% of heroes and villains use capes for the show. I think it is also worth noticing that compared to DC, Marvel's heroes don't tend to have capes (even since the Golden Age, with Namor, Captain America or the original Human Torch). I guess an Edna lives in the Marvel Universe.