National Allied Publications was started in 1934, and made a good amount of money with its reprinting of former news paper comics. At one point two men approached with the idea for "Superman" but the editors found the art lacking, and the story too complex for children, yet they kept it on file just in case. A similar action occured when Bob Kane tried to get "Batman" in but it was seen as too violent for a company that got rich on cowboy, and funny animals.
On the other hand Timely Comics comes out with characters like the Human Torch, and Namor the sub-mariner. The company's first true editor, writer-artist Joe Simon, teamed with soon-to-be industry legend Jack Kirby to create the first real patriotic hero called Captain America. It was also around this time that a young filler writer under the pen name Stan Lee was given the ability to write for Captain America.
One day Lee was offered the chance to create his own book, as a fan of science and adventure the young man spent four days writing, and making crude drawings for "Those who Defy the Fantastic!" A tale of four explorers who travel around the world fighting electric monsters, and even heading into space. The group was made up of Dr. Reed Richards, a strong heroic man, who was a genuis and also an excellent marksmen, Sue Storm was the stereotypical woman fainting at the drop of a hat, Johnny Storm the younger brother, who is reckless and always getting into trouble, and finally Ben Grimm an ex-circus strong man who drives the Fantasticar.
The comic was quickly a hit, and both National Allied, and Timely Comics rushed to print out more "superheroes." National Allied made simple copies of Timely, and left other ideas on the shelf. Timely let Stan Lee run wild, and the young man came out with amazing ideas. The Incredible Hulk, Dr. Bruce Banner an archeologist deep in the amazon finds a mysterious idol of untold power. He takes it, and is suddenly hit with "Xeno" radiation. He returns to America, and the US military (actually a secret section of the military wanting to turn America into a Nazi state) go after Banner to get the idol. Whenever Banner is in danger, his body changes into that of the Incredible Hulk!
Next came Spider Man: Sgt. Peter Parker was captured in a secret mission into Europe. After refusing to talk he was to be tortured, but the man quickly escaped and fled into neutral Spain. There he met the secret order of The Spider. Parker helped save their leader, and as a reward was given a serum which granted him the powers of a spider: super strength, ability to cling to any surface. Now he fights agianst crime as Spider Man!
After WWII comics went down hill, thanks to the comics code, and people not reading about superheroes anymore. It was in the 60's when Detective Comics (formerly National Allied Publications) decided to once again contend with Marvel Comics (formerly Timely). Editor Julius Schwartz was going through the increasingly large storage room of DC comics. He came across a small folder detailing "Superman." Instead of reviving the old character, Schwartz had writers Gardner Fox and Robert Kanigher, penciler Carmine Infantino and inker Joe Kubert create a new super-speedster, updating and modernizing the Superman's civilian identity, costume, and origin with a science-fiction bent. Now Clark Kent was an astronaut who went to the moon, and discovered Green-K a strange compound which made him faster then a speeding bullet, more powerful then a locomotive, and able to leap buildings in a single bound. Dressed in Red, White, and Blue Superman went about saving the world, and America from Communism!
Seeing such things occurs Bob Kane brougt back his "pet" project Batman. Kane had been adding to the character and its mythos since the early 40's. Now Batman was Bruce Wayne a rich and successful businessman who fought against the social crimes of Gotham city by night as the caped crusader.