"The Uncanny Challenge of the Crusher!"
Tony Stark has perfected a means to capture gravity in a jar. While on a South American communist island, a scientist perfects a super-soldier formula that turns him into the Crusher. His leaders send him after Iron Man, who can only defeat him by hitting him with Stark's new gravity gun, and he sinks to the center of the Earth. Happy and Pepper have eloped.
First appearance of the Crusher
"The Last Defeat!"
Captain America has announced his allegiance to the Red Skull to save Manhattan, and the Skull makes Cap divulge the location of America's newest submarine, the XPT-1. The Skull means to capture it and turn its missile armament against the world. Cap plays along, as he knows something about the sub that the Skull doesn't.