Which comic books have helped define Marvel Comics and make them the pop-culture phenomenon they are today? Find out in Marvel Greatest Comics, a compelling showcase of some of the most trailblazing and inspiring comic books ever created. From the groundbreaking original Human Torch and his aquatic adversary Namor, the Sub-Mariner in 1939 to the game-changing 1960s Super Hero icons such as Spider-Man, the Avengers, and the Fantastic Four, to smart modern makeovers in the 21st century like Guardians of the Galaxy and Squirrel Girl, Marvel have set the pace.