Captain America: In 1941, a sickly, frail, weak man volunteered to serve his country in a highly-dangerous experimental program. Injected with the hyper-secret super-soldier formula and subjected to the stabilizing vita-rays, this weakling transformed, his body raised to the height of human perfection. His name was Steve Rogers, and by the end of that year, he found himself leading a group of superheroes banded together as the Justice Society of America!

Sentinel: Millionaire Alan Scott discovered a hunk of rock that contained the virtually unlimited mystic power of the green flame. Turning a piece of the rock into a ring called the Power Ring, Alan Scott dons the identity of the Sentinel and uses his great eldritch powers as a force for justice.

Flash: College science student Jay Garrick had an accident in the campus laboratory while experimenting with Hard Water Molecules. Jay was imbued with incredible super-speed, making him the fastest man alive.

Doctor Fate: The sorceror Nabu was the mystic protector of the Egyptian Empire 3000 years ago. His spirit is preserved after death by the powerfu Lords of Order. In 1936 an acheological expedition uncovers Nabu's tomb. When Kent Nelson puts on the helmet of Nabu, he becomes Dr. Fate.

Doctor Mid-Nite: Doctor Charles McNider, able to see in total darkness, carries out his quest for justice and knowledge as the mysterious Dr. Mid-Nite, armed with his blackout bombs and his trained attack owl Hooty.

Sub-Mariner: Heir to the throne of the legendary undersea kingdom Atlantis, Prince Namor is a half human/half Atlantean warrior with incredible strength and wings on his heels that allows him to fly. He is fierce in battle and ruthless to his foes.

Starman: Ted Knight came from a wealthy family and grew bored by his pampered life. Accused by some of being a "useless rich brat" he turned his formidable intellect to science, hoping to improve life for all humankind. Discoving an unknown type of ray from ray from space, Ted managed to harness it. The energy proved too unstable and could only be controlled via a special "Gravity Rod" of his own invention. Still determined to help the world, Ted created the maked identity of Starman and set out to use his newfound stellear power as a force for good.

Hawkgirl: Egyptian Queen Chay'ara and her husband Pharoh Khufu were treacherously murdered by an assassin. However, their souls are preserved by the Lords of Order, who arrange for the couple to be ressurected repeatedly, returning in each new life as champions of justice. Chay'ara's current life is that of heiress Shiera Hall, wife of famous archeologist Carter Hall. After discovering the remains of an alien ship and the winged flying harness of its pilot, Carter becomes Hawkman and Sheira becomes Hawkgirl.

Toro: Raised by a Roman demi-god, this young boy soon discovered his latent power of fire and flight. After his guardian was killed by Vandal Savage, he was found by the JSA, and taken in.

Fury: Young Helena Kosmatos was an orphan, given power and used as a pawn of supernatural forces to kill Wonder Woman. After the Amazon Queen freed the girl of her servitude, Helena became a loyal disciple of Wonder Woman, who continues to train her how to use her formidable physical strength as a force for good.

Star Spangled Kid: Young Bucky Barnes was an orphan who always lived by his wits, whether he was in a circus or a street gang. After impressing a general and becoming a War Department office boy, Bucky met Steve Rogers. Bucky soon figured out that Steve was really Captain America. This impressed Cap so much that he trained Bucky to be his sidekick, the Star-Spangled Kid.