Superman's success prompted DC's editors to start using their brains in the "superhero" genre. In 1939, DC set out to create a hero for another of its publications, Detective Comics, to rival Superman. At that time, the publication had been in existence for more than two years, and had published a variety of detective and adventure stories, but there was no character in the soul position. The painter Bob Kane, then 26, took on the task.

Kane drew the prototype of the character by referencing sketches by Leonardo da Vinci, the film Zorro starring Douglas Van Punk, and even the vampire horror film. Screenwriter Bill Finger added a hood with pointed ears, gloves, changed the wings in the original case to a cape, and changed the original bright costume to black and gray. This was what came to be known as Batman.

Batman was born in the 27th issue of Detective Comics, published in May 1939. It was extremely popular when it was launched, and the following year it had its own manga series of the same name. With the emergence of this leading figure, "Detective Comics" also became DC's longest-running comic book series.

Batman's premise is the opposite of Superman at every turn from the start: he is a mortal man without any superpowers, fighting with the help of intelligence, training, and equipment. Superman faces mostly social issues, while Batman fights crime. Superman's purpose of existence is to help the innocent who are good, and from the day Batman appears, his actions are to punish the guilty. If Superman represents the supreme good and perfection, what Batman shows is horror and harshness. This relationship between them between light and shadow, surface and inside, has continued to this day.

At the beginning of his birth, Batman was not much different from the popular novels of the time with the theme of detection, except for wearing a batsuit. He's not so much a hero as a detective. His origins are ordinary and sad - one night more than a decade ago, the Waynes, the richest and richest families in Gotham City, took their eight-year-old only son, Bruce, to see the movie Zorro. As they came out of the cinema and passed through an alley, the muzzle of the black hole was pointed at them......

From the moment he knelt blankly in a pool of his parents' blood, watched his mother's pearl necklace turn from pure white to crimson, and listened to his father's muffled voice gradually disappear, young Bruce also died with his parents. Despite his fortune, that night will forever be imprinted on his spirit and become his eternal nightmare. Teenage Bruce decides for revenge. His target is not the murderer of the year, but the criminal capital that took away his parents. He began to study criminology, traveling as far as Europe and the East to receive various trainings in detective and kung fu.

Bruce, who returned from school, unexpectedly failed miserably for the first time when he took to the streets alone to launch a crime-fighting operation. The prostitute he wanted to save instead helped the pimp attack him, and the policeman who had collected the protection money shot and wounded him. When he was on the verge of death, a bat crashed through a window and flew in, giving him inspiration: as a mortal, he needed something to intimidate his enemies - and Batman was born.

By day he is a rich and loose playboy, and by night he is a fighter in black. Although money can provide weapons and equipment for his holy war, he is not superhuman. He is not invulnerable, he has no superpowers, he only relies on hard training to gain strength and wisdom, and he single-handedly challenges the concept of "crime", which pervades every corner of Gotham City, but is invisible and incorporeal.

In the first few issues, Batman was also called Bat-man, and soon the hyphen in the middle was removed, and Batman became a full official title rather than a nickname. At first, Batman also shot and killed, but soon DC changed his style and added two principles to him: never use a gun, never kill someone. In the decades since, Batman has been forced to use a firearm only a handful of times, and has never killed a bad guy easily – giving good enemies a chance to reappear. ONE OF THE MOST FAMOUS NEMESIS IS JOKER, WHO APPEARED IN THE INAUGURAL ISSUE OF BATMAN'S EXCLUSIVE COMIC BOOK, BATMAN, AND IS ARGUABLY THE BEST VILLAIN IN THE COMIC BOOK WORLD, AND HAS BEEN A HUGE HIT FOR DECADES, EVEN HAVING HIS OWN COMIC BOOK SERIES AT ONE POINT.

The comic book empire is beginning to emerge, and a hundred flowers are blooming in the golden age.

In 1942, in the 8th issue of "All-Star Comics", a third DC star who would later fight alongside Superman and Batman was born, this time a woman - Wonder Woman. Her creator is psychologist Dr. William Moulton Marston. This scholar has written many academic monographs and is best known for inventing the lie detector. He wanted to create a character that would be more psychologically beneficial to the reader: a beautiful, gentle, peace-loving woman – Princess Diana of Paradise Island. The gods of Olympus have bestowed upon her a powerful gift, armed with a guardian silver bracelet and a lasso of the Truth, as well as a magical stealth plane. She advocated for equality between men and women. Marston's profound knowledge adds a lively plot to her story. She is not only popular with female readers, but also with men.

The appearance of the juvenile assistant has made the comic popular among young readers. The first teenage assistant in the history of comics was Batman's partner Robin - Dick Grayson (later Nightwing). He is an acrobat and, like Batman, he has witnessed his parents being killed by bad guys. Batman took this child, who had a similar story to himself, under his wing, and made him his partner. This teenage hero was immediately embraced by teenage readers, and soon, other heroes had their own little helpers.

Hero combinations are also beginning to appear. In 1940, the Justice Society of America (JSA) was born, with members including The Flash, Green Lantern, Hawkman, Atom, Ghost, Doctor Fate, Shixia, and Sandman. Wonder Woman later joins in. However, the JSA is more like a club of heroes than a team: the members meet together to discuss, but they act separately.

During the Second World War, many of the heroes of the comics fought in the anti-fascist battles to a greater or lesser extent. These cartoons were well received by the GIs and served as a morale booster. World War II became the pinnacle of the golden age of comics. With the victory of the war, the heroes' most important mission was lifted for a while, and people who were immersed in the joy of victory no longer needed superheroes to save the world. The serialization of most heroes has ended one after another, and the only heroes who are still active are the old Superman, Batman, and Wonder Woman, and other heroes in DC such as Green Arrow, Aquaman, etc. have no independent serialized comics, but they still occupy a place in "Action Comics" and "Detective Comics".

In the 50s, American comics suffered the greatest challenge, and the "comic book harmfulness theory" began to become popular, and the psychologist Frederick Weitham declared that comics led to crime, and launched a comprehensive crackdown on the comic industry. Since DC's comics have always been conservative and don't have much real criticism in terms of scale, Wittham turned his attention to the "private lives" of the characters. This leads to his most notorious assertion that comics lead to homosexuality, that Wonder Woman is a lesbian in Wittham's eyes, and that he considers her character to be "anti-male" despite having a boyfriend in the story, and similarly that he believes that Batman is anti-female because the pretty women in it are mostly bad women. In 1954, the Senate held a hearing specifically on comic book publishing. Comic book companies had to set up their own limits and voluntarily set up a self-regulatory body, the Comic Code Authority, so that "compliant" comics would have to be marked with the CCA mark on the cover before they could be shipped and sold. At the same time, there was also a movement against comics in society. Publishers shut down, and within a year, comic book sales fell by 75 percent.

Helping DC through this difficult period are still its two signature characters: Superman and Batman. In the June 1952 issue 76 of Superman, titled "The Mightiest Team in the World," Batman teamed up with Superman for the first time, and the two discovered each other's true identities. In 1954, the 71st issue of World's Finest magazine began serializing the two superheroes' collaboration, replacing the original story format in which Batman and Superman were the protagonists of the comics. The duo's partnership is "a financial success rarely seen during the comics industry's depression." Since then, Superman and Batman have been a long-term partnership that has lasted for decades and is seen as a model of friendship and cooperation.