3. Hank Pym
Hank Pym stands as one of Marvel’s most inventive minds, known for discovering Pym Particles that allow objects and people to change size at will. This led Pym to invent numerous technologies and even discover brand-new universes at the atomic and subatomic levels. Pym has donned many heroic identities—Ant-Man, Giant-Man, Yellowjacket—and each persona reflects his insatiable curiosity. His technological mastery led to both triumphs and tragedies, most notably the creation of Ultron. Pym’s legacy is as complex as his intellect, forever altering the Marvel Universe. Yet he’s still one smart dude!