When Superman first hit the scene with his blue and red tights it created a shockwave around the country that it hit off the whole superhero craze that is going on stronger than ever today with blockbuster movies like Batman and the Avengers. Before that no one had ever seen a hero in tights and cape. Where did they get the idea from?
Siegel and Shuster created a character called Superman in 1933 though it bore very little resemblance to the Superman we know. He had mental powers but had normal strength. A year later they would re-envision him into a super crime fighter.