The Cosmic Cube is a powerful item that is said to make the world in the image of the one or make a wish in heart's desires by simply touching it.
After M.O.D.O.C. lies to Baron Strucker that the cube's creation was a failure, HYDRA attacks A.I.M. and M.O.D.O.C. for the cube. M.O.D.O.C. wanted the cube for himself but Strucker had the Dreadnoughts kill him and just when he was about to touch it, Captain America intervenes and when the two legends touched the cube at the same time, nothing happened. Tony says he knew the cube wouldn't work but it's hard to tell whether he is sure or not. But it did work, Captain America is the one who touched the cube first and wished for Bucky to be alive instead of being killed. His wish was granted and Bucky survived the explosion and landed on the water to be frozen only losing one arm.
- 121. "Hail, Hydra!"