Girl Wearing Superhero Costume

Many features of superhero costumes recur frequently, including the following:
• Superheroes who maintain a secret identity often wear a mask, ranging from the domino masks of Green Lantern and Ms. Marvel to the full-face masks of Spider-Man and Black Panther. Most common are masks covering the upper face, leaving the mouth and jaw exposed. This allows for both a believable disguise and recognizable facial expressions. A notable exception is Superman, who wears nothing on his face while fighting crime, but uses large glasses in his civilian life as Clark Kent. As well, because Superman possesses super speed, he is able to move his face back and forth quickly enough when he is Superman to blur any distinguishable features. Some characters wear helmets, such as Doctor Fate or Magneto.
• A symbol, such as a stylized letter or visual icon, usually on the chest. Examples include the uppercase "S" of Superman, the bat emblem of Batman, and the spider emblem of Spider-Man. Often, they also wear a common symbol referring to their group or league, such as the "4" on the Fantastic Four's suits, or the "X" on the X-Men's costumes.
• Form-fitting clothing, often referred to as tights or Spandex, although the exact material is usually unidentified. Such material displays a character’s athletic build and heroic sex appeal and allows a simple design for illustrators to reproduce.