During a trade event in Rio de Janeiro, Sam's plane crashed on a remote Caribbean island. The villain Red Skull used Sam's remaining kindness to infiltrate the Avengers, and used the Rubik's Cube to give Sam the ability to communicate with birds, thus the Falcon was born. Falcon then met Captain Steve Rogers of the United States. After the guidance and training of Captain America, the two men jointly defeated the "Red Skull" and its gang. After returning to new york, they became the assistant of Captain America, equipped with a pair of high-tech metal wings with the technical support of Panther, and joined The Avengers.
However, S.H.I.E.L.D. discovered his dark past with "electroshock therapy". The tainted hero was wanted many times, and the captain fought off these evil forces with him. Falcon is not a particularly gregarious hero. Because of the exposure of his criminal record, he was more concerned about the comments of other Avengers, so he left Avengers soon.