Real Name: Dr. Henry Jonathan Pym

Occupation: Scientist, Adventurer

Legal Status: Citizen of the United States with no criminal record

Identity: Publicly known

Place of Birth: East Nowhere, Nebraska

Marital Status: Widowed

Known Relatives: Maria Trovaya Pym (first wife, deceased), Janet Van Dyne (Wasp, second wife), Nadia Van Dyne (step-daughter), Hank Pym Jr. (son, deceased), Ultron (creation/"son"), Vision (creation/"grandson"), Jocasta (creation/"daughter")

Group Affiliation: Former member of the Avengers, founding member of the Defenders, Avengers Academy faculty

Base of Operations: Avengers Mansion, New York City; Pym Laboratories, New York City; Avengers Compound, California

First Appearance: Tales to Astonish #27 (1962)

History: Dr. Henry Pym was a brilliant scientist who discovered a rare group of subatomic particles he dubbed "Pym Particles" which allowed him to alter his size. At first, he used the Pym Particles to become the hero known as Ant-Man, but later he also took on the identities of Giant-Man, Goliath, and Yellowjacket. Pym's research also led to the creation of artificial intelligence, including the dangerous Ultron. Despite his many achievements, Pym struggled with personal demons that often led him to make questionable decisions.

Pym's first wife, Maria, was killed by agents of the East German government while he was in the process of defecting to the West. He was later married to Janet Van Dyne, who became his partner in the field as the Wasp. Together, they co-founded the Avengers and had many adventures together. However, their marriage was strained by Pym's insecurity and the revelation that he had created Ultron, who turned against him and the Avengers multiple times.

Pym's mental instability came to a head when he adopted the persona of Yellowjacket and proposed to the Wasp in a fit of delusion. When she rejected him, he became violent and was ultimately defeated by his fellow Avengers. Afterward, he sought therapy and worked to overcome his issues. He later became a respected member of the scientific community and a mentor to younger heroes as a faculty member at Avengers Academy.

Height: 6'2"

Weight: 190 lbs.

Eyes: Blue

Hair: Blond

Strength Level: Hank Pym possesses the strength level of a man of his age, height, and build who engages in moderate regular exercise.

Known Powers: Hank Pym possesses no known superhuman powers but is a brilliant scientist with expertise in various fields such as robotics, biochemistry, and cybernetics. He developed the Pym Particles which allow him to change his size and mass, from a few inches to over 100 feet tall. He has also developed numerous inventions such as the Ant-Man and Yellowjacket suits, the Wasp's bio-energy blasts, and the robotic Vision.

Abilities: Pym is a skilled inventor and combatant with training in various forms of hand-to-hand combat and firearms. He has also shown proficiency in leadership and strategic planning as a longtime member of the Avengers.

Equipment: Pym has access to numerous technological inventions such as his various size-altering suits, cybernetic communication devices, and advanced weaponry.

Limitations: Pym's mental instability has led him to make numerous questionable decisions, including creating Ultron and adopting the identity of Yellowjacket. He has also struggled with personal relationships, particularly with Janet Van Dyne. Additionally, prolonged use of the Pym Particles has been known to cause mental and physical strain on the user.