Hank Pym

Doctor Henry "Hank" Pym is an entomologist and physicist who developed the Ant-Man Suit. For a time, he worked for S.H.I.E.L.D. as a consultant and became the first Ant-Man.

Being the hero he was destined to be took a toll on his life, and that toll was the loss of his wife Janet Dyne. This caused him to quit as the role and focus on his family for many years, during this he formed his own company, Pym Technologies.

During his retirement, Loki attacked New York. He was called upon by one of his past associates Tony Stark to aid the Avengers and stop the Chitauri army.

Due to his age, he passed the title of Ant-Man down to Scott Lang when his own former protege Darren Cross attempted to sell his technology, the new Yellowjacket Suit, to the notorious paramilitary terrorist organization known as HYDRA. His experience stopping Cross also allowed Pym to come to terms with losing his wife Janet van Dyne to the Quantum Realm years earlier, and also helped him agree to allow his daughter Hope van Dyne to don the Wasp Suit and become the hero Janet once was.