Everything Batman can do, Batgirl (Barbara Gordon) can do, too. She even looks good doing it. While the caped crusader is easily one of DC’s sharpest minds, his protégé has used brains over brawn just as often.
Everyone knows that Peter Parker was bitten by an irradiated spider while on a trip to a lab during high school. What is sometimes forgotten is that Peter was a prodigy even back then with an IQ which matched Reed Richard’s (Mr Fantastic) before he was old enough to shave.
Another example of the 1960s trend for genius scientists becoming superheroes, Ray Palmer was experimenting with matter compression as a solution for issues of overpopulation, famine, and other problems in the world.
Above average just doesn’t cut it when it comes to the mind of Amadeus Cho. He’s often credited as the 7th smartest person in the world (of Earth 616) and excels in almost every single academic discipline.
A founding member of the X-Men and the first to graduate Xavier’s school for gifted youngsters. Henry McCoy already possessed mutant gifts of strength and agility but decided to pursue science over super-heroics and took a job with the Brand Corporation as a research scientist.
While most famous for his numerous physical powers, Superman is a genius by Earth standards and has the benefit of a Kryptonian education which is centuries ahead of anything on Earth. Thanks to the various resources of the Fortress of Solitude, Superman has conducted research into many of Earth’s scientific dilemmas, including research into a cure for cancer.
Neither a Marvel nor a DC hero, Megamind is a parody of both Superman and Lex Luthor, sharing similarities with both. Metroman is blessed with vast superpowers, good looks, charm, and seemingly endless good fortune, Megamind is a genius, but lacks Metro Man’s other attributes.
Marvel’s answer to The Atom, Hank Pym is a genius scientist who discovers “Pym Particles” which give him the ability to shrink to the size of an ant. In time, he develops the ability to grow to giant proportions and alternates between the identities of Ant Man, Giant Man, Goliath, Yellow Jacket, and even The Wasp for a time.
If Tony stark is a “Genius, Billionaire, Playboy, Philanthropist” T’Challa is all that and more. Besides being a legendary warrior, equal to Captain America, he is the King of Wakanda; an African nation of incredible wealth.
Stephen Hawking, Bill Gates, Elon Musk, and Richard Branson combined couldn’t match the innovation and business acumen of Tony Stark. While most famous for the creation, and constant improvements to, the Iron Man armour, Tony Stark is a pioneer in many hard sciences and is the head of his own multi-national tech conglomerate.
The smartest man in the Watchmen universe, Adrian Veidt was a genius from childhood. He deliberately decided to hide this and achieved only average grades throughout school. When his parents died he inherited a vast fortune, but choosing to achieve things on his own, he gave all the money to charity.
When other kids were watching Sesame Street, Michael Holt was absorbing the works of the greatest minds on Earth. His genius appeared to cover all aspects of human intelligence and he quickly amassed 14 PHDs in numerous academic fields. Holt considers himself to have "a natural aptitude for having natural aptitudes" and picks up complex skills and abilities with great ease.
While The Hulk is known for being “The strongest one there is," his alter-ego of Bruce Banner is almost the smartest one there is, too. He is credited as having an IQ so high that it cannot accurately be measured.
Had Bruce Wayne’s parents not been killed when he was a child, he’d be famous as a billionaire playboy as well as a creative genius. However, when he became the Batman, he began to train his mind as hard as his body and he became an expert in criminology, forensics, engineering, and numerous other disciplines.
The smartest man on ANY world, Reed Richards aka Mister Fantastic, has mastered time, space, interdimensional travel, and practically every other science known to man, as well as several that aren’t. while famously possessing a body that is stretchy and malleable, it is almost insignificant when compared to the power of his mind.