It might be helpful to see a quick overview of how the history of this world subtly differs from that of the "real world".
Events in this universe pretty well followed the course they did in our universe. The major differences involve the evolution of supers prior to the Rapture Event.
The Arrival of Starwoman: In 1908, a spaceship bearing an infant girl crashed into the Siberian wasteland. Since it landed in such a remote area, nobody noted it. The girl was found by a Siberian shaman who taught her his mystic secrets. During World War II, she fought against the Nazis, but afterwards took on Stalin's regime, until she was killed in 1955.
The Golden Guys: Evil was afoot in the 1930s, and it made sense back then to put on a colorful costume and fight it. A lot of costumed heroes arose in those days, taking on nom de guerres like Ratman, Green Tornado, and Liberty Belle. Most of them were killed in the violence of World War II, and the rest mostly hung up their capes in the 1950s. "Golden Guys" however have had a tendancy to pop up in various areas of the world, where they were needed, such as south-east Asia, Bangladesh, and the inner cities of America.
Superspies: As the Cold War advanced through the 50s to the 80s, espionage between the super powers became more important. Well-funded superspies were trained and equiped with the best equipment modern technology could make. Some of this equipment might have found its way into unauthorized hands...
The Superchicks: It is hard to imagine the world that prompted Miss Terrific to put on a mask and a skintight costume, and wage a one-woman war for Right, Liberty, and the Overthrow of Male Chauvanism. But she was soon not alone, as other ladies took on costumed identities to fight for women's lib. In 1977, they banded together as the Angels, which might have been a mistake because they were all killed in 1983. By that time, however, even the arch conservative President Ronald Reagan declared a day of mourning for them.
The Day of the Cyborgs: In 1974, Russian scientists succeeded in creating a cyborg -- a man who has mechanical body parts granting him superior strength and other abilities. In 1976, the Americans duplicated the feat. A few cyborgs were created, but problems developed. Cyborgs had a nasty habit of dying young from either infections or radiation poisoning or mutated infections. Not even the power of Hafnium could save them.
The Power of Hafnium: In 1977, hafnium power cells were invented. Hafnium cells can store and release a tremendous amount of power. They are, however, fickle, expensive, difficult to make and use, and have a tendancy to release radiation in the X-Ray spectrum. After a few years, their drawbacks became apparent, and they have not been much used except in very high end equipment.
Dr. Wartha: In 1978, Dr. Andrew Wartha made headlines with his book about how detrimental the superchicks were to society. He blamed the superchicks for practically every problem that existed in the 1970s. Since 1990, his work has been continued by his son, Dr. David Wartha.
The Zorros: Events in Latin America got pretty violent in the 70s and 80s. Many people took up masked identities to fight for one cause or another. It's not always clear who the good guys were and who the bad guys were, although one rule of thumb is that a guy holding a gun to your head is probably a bad guy. Since the 90s, tensions have died down a little, and most Zorros are involved fighting drug lords.
The Dancers League: In reaction to the increasing chaos in the Middle East in the 2000s, a number of women have decided to openly flout the puritanical shieks and dress themselves in belly dancer attire to fight against evil.