This document is a compare and contrast essay on the Marvel superhero characters Captain America and Iron Man. It summarizes their different origins, powers, and storylines. Captain America was a weak man who gained superhuman abilities in World War 2, while Iron Man is a billionaire who builds a powerful suit of armor. Their movies also have different plots, with Captain America fighting in World War 2 and Iron Man facing threats to his technology. Both characters bring messages of perseverance and doing what's right despite challenges.