The super-soldier serum turned scrawny Steve Rogers into the peak of human physical perfection, and his vibranium shield can absorb a direct hit from Thor's hammer without a scratch. Cap is the best hand-to-hand combatant in the Avengers, a master tactician who once outmaneuvered Thanos, and possesses a moral compass so unshakeable he wielded Mjolnir. He doesn't win because he's the strongest—he wins because he does not quit.

Bitten by a radioactive spider and burdened with more responsibility than any teenager should carry, Peter Parker became the wisecracking wall-crawler known as Spider-Man. His spider-sense grants near-precognition in combat, and he can bench-press ten tons while dodging bullets with acrobatic flair. The smartest mouth in the Marvel Universe, backed by a genius-level intellect.