Henry Pym (Earth-BH02)

Henry Pym is an extraordinarily smart scientist at S.H.I.E.L.D. who is married to fellow scientist Janet van Dyne. Being incredibly smart, he used the technology at his disposal to create what is known as "Pym particles" that can change a persons size when injected or drank. He also has a helmet to communicate with ants which is why he goes by Ant Man.