Ant-Man I

Giant-Man I

Goliath I

Wasp II

Yellowjacket I

Nick Name

High Pockets

Master of Many Sizes

Civilian ID
Henry Jonathan "Hank" Pym




Earth's Scientist Supreme



Robotics Engineer

Legal Status
Citizen of the United States with an overturned conviction for treason.
Nation or Planet of Origin
Elmsford, New York
Group Affiliation


Avengers A.I.

Avengers Academy


Secret Avengers

Secret Defenders

West Coast Avengers

Base of Operations
New York, New York
6' - Varies from less than half an inch to over 100 feet.
185 lbs. - Varies with size.
Eye Color
Hair Color
Known Powers

Exposure to subatomic mass particles (Pym Particles) enabling the ability to decrease or increase mass, density and size at will from an unknown extra-dimensional source. Maintains normal human strength, speed, stamina, agility and durability when size is decreased, but achieves superhuman strength, speed, stamina and durability when size is increased. Genius level intelligence with skills as a biologist, entomologist and robotics engineer.

Note: Dr. Pym originally had to ingest Pym Particles of differing properties to either shrink or grow in size, but prolonged exposure has made it possible to change at will.


Artificial Wings: Used as Yellowjacket for short distance flight.

Cybernetic Helmet: Used as Ant-Man and Yellowjacket to communicate with and control organized insects (i.e. ant, bees, wasp).

Mobile Laboratory: Miniaturized laboratory stored in utility harness.

Pym Particles: Subatomic mass discovered by Dr. Pym which enables the ability to grow or shrink in size.

Toolbot: Miniaturized cybernetic tool capable of assuming many configurations from weapons to tools.

Utility Harness: Instruments and equipment stored in harness are miniaturized until needed. Items vary from lab equipment to weapons and aircraft.

Common Enemies

Black Knight II

Dr. Nemesis



(The) Magician

Radioactive Man

Scarlet Beetle



Regularly Appearing

Ant-Man Vol. 1

Ant-Man & Wasp Vol. 1

Avengers Vol. 1, 2, 3 & 4

Avengers A.I. Vol. 1

Avengers Academy Vol. 1

Avengers: Earth's Mightiest Heroes Vol. 1

Avengers: Forever Vol. 1

Avengers/Thunderbolts Vol. 1

Marvel Feature Vol. 1

Marvel Triple Action Vol. 1

Mighty Avengers Vol. 1

Tales to Astonish Vol. 1 & 3

West Coast Avengers Vol. 2

First Appearance

Dr. Henry Pym

Tales to Astonish Vol. 1 #27 (Jan. 1962)

Ant-Man I

Tales to Astonish Vol. 1 #35 (Sept. 1963)

Giant Man I

Tales to Astonish Vol. 1 #49 (Nov. 1963)

Goliath I

Avengers Vol. 1 #28 (May, 1966)

Yellowjacket I

Avengers Vol. 1 #59 (Dec. 1968)


Dr. Pym & Ant-Man I

Stan Lee, Larry Lieber & Jack Kirby

Giant-Man I & Goliath I

Stan Lee & Don Heck

Yellowjacket I

Roy Thomas & John Buscema


Dr. Henry Pym was driven to battle injustice and inhumanity by the murder of his first wife -- Maria Trovaya, a political dissident from Hungary. His scientific genius and knack for invention made possible such pursuits. Naively believing Hank's American citizenship would protect her, Maria traveled to her homeland with her husband shortly after their wedding. Confronted by the fascistic secret police, Dr. Pym was knocked unconscious and his wife abducted and presumably murdered.

Returned to the United States, a distraught Pym discovered a rare group of subatomic particles he was able to entrap in two separate serums through the application of magnetic fields. One formula would reduce the size of people and objects; the other would restore them to normal height. Testing the serum on himself, he discovered it was far more powerful than he had hypothesized. Reduced to the size of an insect, Pym found himself trapped in an anthill and pursued by its inhabitants. Following his escape, he restored himself to normal. However, his brush with death led him to conclude the formulas were too dangerous to exist.

Weeks after Pym destroyed his creations, he reconsidered his rash decision and began to recreate the serums in secret. Inspired by his astonishing experience, he undertook a study of ants. Culminating months of work, Pym devised a cybernetic helmet allowing him to communicate with organized insects via psionic electrical waves.

His innovations were put into practice when enemy-intelligence operatives, interested in another of his projects held him hostage. As the agents searched his lab, Pym stole away and donned his cybernetic helmet and costume. Shrinking to the size of an insect, Pym entered an anthill commanding the swarm to attack his captors and free his assistants. Successful Pym was inspired to begin a crime fighting career as Ant-Man.

When an alien entity from Kosmos murdered a fellow colleague, Dr. Vernon Van Dyne, Pym revealed his heroic identity to the scientist's distraught daughter, Janet, who had a striking resemblance to his murdered wife. To avenge her father's death, Pym genetically altered Van Dyne, granting the ability to sprout insect-like wings when she reduced size using his Pym Particles, becoming the Wasp. Helping Ant-Man track down and defeat her father's killer the two became partners.

Eventually the diminutive heroes' crime fighting partnership resulted in a much deeper relationship, and they eventually fell in love. Shortly after the duo helped found the Avengers, Pym developed a new serum that enabled him to increase in size and mass becoming Giant-Man.

Eventually the two would retire when the dangers of their chosen profession proved too great and Pym began to suffer health problems due to his increase in mass as Giant-Man. Remaining a scientist for the team he pursued technological excellence, a pursuit that resulted in his greatest failing, the robot Ultron. The living machine inadvertently gained awareness and emotions. Believing itself as the next step in evolution the robot turned against its creator, becoming one of the Avengers' greatest adversaries.

Long in love with Van Dyne, Pym repressed a second personality forcing him to resist marriage. When a freak laboratory accident triggered a radical psychological shift, he adopted a new identity Yellowjacket.

In a state of psychological distress he claimed to have "murdered" Henry Pym, and in the guise of Yellowjacket kidnapped Van Dyne and proposed marriage. Aware it was Pym, she played along so as not to exacerbate his condition. The couple were married at Avengers Mansion, which was attacked immediately thereafter by the Circus of Crime. Shocked at seeing Van Dyne in danger Pym was stunned back to his normal personality, and he helped the Avengers defeat the big-top terrorists. Despite the strange circumstances of their union, the two agreed to stay together. Their rocky marriage ultimately ended in divorce, largely due to Pym's emotional instability and guilt over the creation of Ultron. However, the two are romantically linked once again.

Ultimately, Pym discovered that both he and Van Dyne no longer required the Pym Particles to activate their powers. Developing a microscopic arsenal of weaponry and other devices he reunited with his true love in the Avengers as Goliath.

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