4. The X-Men (X-Men Movies)
X-Men or group of middle-aged, mid-life crisis bikers? You decide. There's really nothing nice about the uniforms donned by the movie X-Men. Nothing at all. Leather isn't cool and we've already established that superhero outfits shouldn't have visible zips, so to combine the two is a travesty. More to the point, the outfits don't even match. They're all leather, all seem to have zip fasteners, and they are indeed all horrible, but they're all different styles and there's no conformity, so the X-Men members do just look like a bunch of random bikers who've converged at a bar.