U.S. Agent is a character appearing in American comic books published by Marvel Comics, usually those starring Captain America and the Avengers. Created by Mark Gruenwald and Paul Neary, the character first appeared in Captain America #323 as Super-Patriot. He was later redesigned as an incarnation of Captain America and a few years later, as U.S. Agent.
U.S. Agent. Art by Leinil Francis Yu.
John Walker as Super-Patriot. Cover of Captain America #327 (March 1987). Art by Mike Zeck and Bob McLeod.
Clockwise from top left: Human Torch (Jim Hammond), Captain America, Sub-Mariner, Union Jack (Joseph Chapman), U.S. Agent, and Blazing Skull on the cover to New Invaders #1, with art by Scott Kolins.
Captain America is a superhero created by Joe Simon and Jack Kirby who appears in American comic books published by Marvel Comics. The character first appeared in Captain America Comics #1, published on December 20, 1940, by Timely Comics, a corporate predecessor to Marvel. Captain America's civilian identity is Steve Rogers, a frail man enhanced to the peak of human physical perfection by an experimental "super-soldier serum" after joining the United States Army to aid the country's efforts in World War II. Equipped with an American flag-inspired costume and a virtually indestructible shield, Captain America and his sidekick Bucky Barnes clashed frequently with the villainous Red Skull and other members of the Axis powers. In the final days of the war, an accident left Captain America frozen in a state of suspended animation until he was revived in modern times. He resumes his exploits as a costumed hero and becomes leader of the superhero team the Avengers, but frequently struggles as a "man out of time" to adjust to the new era.
Variant cover of Captain America #1 (2018), by Adam Hughes
Cover of Captain America Comics #1 (December 1940, cover dated March 1941). Art by Joe Simon and Jack Kirby.
Cover of The Avengers #4 (March 1964). Art by Jack Kirby and George Roussos.
Chris Evans (pictured 2010) portrays Steve Rogers in the Marvel Cinematic Universe.