In the early 1950's, Jack Monroe was a student at the Lee School. Due to their common interest in Captain America, he developed a close friendship with a teacher named Steve Rogers. Their friendship led to the revelation that Steve had the Super Soldier formula.

In 1955 as the Red Skull held the United Nations hostage, Jack received an injection of the formula and became the new Bucky. As the duo fought to protect the nation, the formula was slowly driving them insane. They had not been exposed to vita-rays after the formula's injection, as the original Captain had. They became paranoid and saw Communists everywhere. In 1956, they were captured by the FBI and put into suspended animation until a cure could be found.

First Marvel appearance: Young Men #24
First MV1 appearance: Avengers 1958 #4

The man who would one day become the exact double of Steve Rogers idolized Captain America as a youth. After he had heard that the Sentinel of Liberty had been killed near t the war's end, he made it his life's work to research Captain America. In a Nazi records storehouse, he discovered the legendary Super-soldier formula. Bringing his finding to the government, he intended to use it to become a new Captain America in 1953 during the Korean War. Extensive surgery had made him look and sound exactly like Steve Rogers. He even adopted the name of his idol. The Korean conflict ended that year and the government shelved the project. "Steve" went back to the Lee School as a teacher.

In 1955 as the Red Skull held the United Nations hostage, "Steve" injected himself and Jack Monroe with the formula. As the duo fought to protect the nation, the formula was slowly driving them insane. They had not been exposed to vita-rays after the formula's injection, as the original Captain had. They became paranoid and saw Communists everywhere. In 1956, they were captured by the FBI and put into suspended animation until a cure could be found.

First Marvel appearance: Young Men #24
First MV1 appearance: Avengers 1958 #4

Professor Will Sinkowitz was a researcher in the field of cryogenics. It was his contention that the human body could be given superhuman abilities through carefully controlled temperature changes. In the last stages of his research, he was aided by a Skrull agent posing as Vice-President Nixon. The device, the Absolute Zero Apparatus, gave Sinkowitz's body enhanced strength. It also granted him the ability to generate intense cold. He was duped by the Skrull into believing that the 3-D Man was a Communist agent. In his ensuing battle with the 3-D Man, his protective suit was damaged and his powers faded away.

He was later mesmerized by the Yellow Claw and took part in the kidnapping of President Eisenhower. After the Claw's agents were defeated by the Avengers, Sinkowitz was taken into FBI custody. After deprogramming his mind with the help of Venus, the FBI put Sinkowitz to work on a project to revive Captain America and Bucky.

First Marvel appearance: Marvel Premiere #37
First MV1 appearance: Avengers 1958 #4

Ken Hale was an adventurer in search of the legendary "Gorilla-Man" of Kenya, a monster that was half-man and half-animal. He eventually found his quarry and slew the beast. However, by some strange curse, he was transformed into the new Gorilla-Man. He still retained his intellect and power of speech in his simian form.

Hale wandered around Africa until he was found by Marvel Boy and Jann of the Jungle and recruited into the Avengers. After their first mission, he accompanied Marvel Boy back to Uranus in the hope of finding a scientific cure.

First Marvel appearance: Men's Adventures #26
First MV1 appearance: Avengers 1958 #2

The Human Robot was one scientist's crowning achievement. However, his unscrupulous business manager jealous rival sabotaged the Robot before its regulator was installed. The Robot was programmed to kill its creator, which it did. However, the lack of a regulator caused it to remain in a "kill" mode. It then killed the saboteur as well. In its search for more victims, the Robot was short-circuited when it plunged into New York Harbor.

The Robot was later found by Namora. With the help of the 3-D Man, the Human Robot was once again brought to the surface. Marvel Boy installed a regulator into the Robot which allowed him to now become a force for good. Marvel Boy also used Uranian technology in order to give the Human Robot the ability to think.

First Marvel appearance: Menace #11
First MV1 appearance: Avengers 1958 #2

In 1934, in an effort to escape from a world of tyranny, Professor Matthew Grayson built an experimental uranium-powered rocketship. Once completed, Professor Grayson and his infant son Bob launched towards the planet Uranus. Upon arriving on the distant planet, they found a peaceful, super-scientific civilization.

As Bob grew up, he developed an amazing intellect and the power of mental telepathy. He also gained strength and speed that was above that of a normal human. In 1950, at the age of sixteen, he undertook a voyage back to the planet of his birth. His father suggested that Bob's abilities were sorely needed on Earth. Matthew presented him with uranium pills that would maintain his extrahuman physical abilities. He also armed Bob with a pair of ancient wristbands, one of which contained a light jewel that emitted blinding light. He also dubbed his son "Marvel Boy".

Both on Earth and Uranus, Marvel Boy fought against criminals and spies of all sorts. He dropped out of sight on Earth from late 1951 until 1958, when he helped found the Avengers.

First Marvel appearance: Marvel Boy #1
First MV1 appearance: Avengers 1958 #1

Namora was an Atlantean hybrid, the product of an Atlantean father and a human mother. From her father's side, she was a cousin of Namor, the legendary Sub-Mariner and Prince of Atlantis.

In 1948, she joined Namor in his postwar crimefighting. She was gifted with the same type of strength, endurance, and power of flight as was her cousin. After a brief career, she retired in order to bear her daughter Namorita.

In 1954, she rejoined Namor in his efforts to fight against worldwide Communism. When Namor disappeared in 1955, she focused her activities on finding her cousin.

First Marvel appearance: Marvel Mystery Comics #82
First MV1 appearance: Avengers 1958 #6

Nemo is a clone of Prince Namor, the legendary Sub-Mariner. He was created by the Atlantean scientiest Vyrra. Namor had visited the banished scientist when the Prince was a boy. Vyrra acquired a skin sample from Namor and, in 1942, was able to generate a successful clone. In 1942, the clone escaped and made his way to New York City. He was found by Bucky, Toro, and the other Young Allies and inducted into the group. The team thought that he was simply another Atlantean like Namor. The clone adopted the nickname that they gave him, "Subbie", as his own.

When Namor found out about Subbie, he went to meet the boy. After taking a tissue sample of Subbie's back to Atlantis, Namor came to a conclusion about what Subbie was. Knowing Atlantean law about clones, Namor sent Subbie away and told him never to come back.

Subbie grew up alone as he wandered the seas. It was not until he heard that Namor had disappeared did he make his presence known. He decided to take Namor's place as the scourge of the seas, but he would do it for the benefit of America - the only home he had ever, albeit briefly, known.

Namora began hearing rumors about sightings of Namor. She went to the Avengers for help. At the same time, the US government was dealing with Soviet anger over attacks upon Communist ships. The Avengers, with the aid of Toro, were sent to investigate the attacks. The clone's true identity was determined. Subbie decided to take a new name for himself, Nemo, a name with links to his original and to the sea.

First Marvel appearance: Kid Komix #1
First Atomic appearance: Avengers 1958 #5

Chuck Chandler was a test pilot for NASA. During his test of the experimental rocket-plane, the XF-13, he was captured by a Skrull saucership. The Skrulls were interested in Earth for its strategic importance in their ancient war with the Kree. They wanted to find out about Earth's space programs. Chuck proved to be an uncooperative subject. In his escape, he managed to damage the saucer's warp drive. The saucer exploded as he flew off, bathing him in alien radiation. His brother Hal had been watching the flight in the Mojave Desert. Chuck crashed the XF-13 near Hal's position. When Hal went to Chuck's aid, the radiation took effect and Chuck vanished.

Hal later discovered that Chuck's image and been imprinted onto the lenses of his glasses. One lens had a red image, the other had a green image. When Hal wore the glasses and concentrated on merging the two images, Hal triggered a dimensional transfer that returned Chuck to reality and placed Hal in a trance.

Chuck's body suit had become red and green colored as well as bonded with his body. His strength and stamina were now triple of his previous levels. He also had acquired a sensitivity to the presence of Skrulls. His presence on the earthly plane was limited to three hours at a time.

The 3-D Man fought crime and occasional Skrull plots as a solo adventurer for a few years. He was contacted by Jimmy Woo of the FBI and became a charter member of the Avengers.

First Marvel appearance: Marvel Premiere #35
First MV1 appearance: Avengers 1958 #2

Venus is the Roman god of love. For centuries, she lived upon Mount Olympus with her fellow Olympians. After the horrors of the Second World War, she realized that the world was in dire need of her power of love.

She used her immortal might to make the world a better place. Her powers and experience were useful against some the ancient evils that arose in those troubled times.

She was contacted by FBI agent Jimmy Woo and fought as an Avenger against the Yellow Claw.

First Marvel appearance: Venus #1
First MV1 appearance: Avengers 1958 #2